Windows phone native web app jobs

I'm looking for a skilled React Native developer to help me with a quick project. The task involves designing and implementing a single API. Unfortunately, the specific task and API type are not defined in the project description. Your main responsibility will be understanding and implementing the API effectively. Therefore, the ideal candidate should have experience in designing and developing APIs, especially if they are RESTful or GraphQL. While the exact functionality of the API is not specified, the following are common functionalities that you might need to consider for implementation: - Create, read, update, and delete (CRUD) operations - Authentication and authorization - Data validation and error handling Please note that this project is time sensitive and thus r...

...authorized representative, such as line of business, key executives' names, etc. • Take pictures of the subject company and its vicinity per Confirmis’ standard operating guidelines. • Provide observation about the company to gauge activeness, e.g., staff working at the premise, loading/unloading of goods, etc. REQUIREMENTS: • Must be living in (or nearby) Plaridel, Philippines • Has a camera or phone/tablet of quality with a camera, internet access • Must be available during business hours (9 AM - 4 PM) on working days Please see the attached file for the site visit guidelines. You are only required to deliver the pictures, video & observations and are not expected to assemble a report like the Sample Report. Note: Milestone will be rel...

...company’s authorized representative, such as line of business, key executives' names, etc. • Take pictures of the subject company and its vicinity per Confirmis’ standard operating guidelines. • Provide observation about the company to gauge activeness, e.g., staff working at the premise, loading/unloading of goods, etc. REQUIREMENTS: • Must be living in (or nearby) Antalya, Turkey • Has a camera or phone/tablet of quality with a camera, internet access • Must be available during business hours (9 AM - 4 PM) on working days Please see the attached file for the site visit guidelines. You are only required to deliver the pictures, video & observations and are not expected to assemble a report like the Sample Report. Note: Milestone w...

I need technical support to change the billing address of our Google Ads account. We need to ensure the correct information is displayed for invoicing purposes. Key requirements: - Update billing address: The current information in our Google Ads account is outdated. You will need to update the address field to reflect our current location. - Update contact phone number: You will also need to update the contact phone number associated with the account. - Update RFC: We require the "RFC" (tax identification number) to be correctly displayed in the account for invoicing purposes. We're seeking a professional with: - Proficiency in Google Ads: You should have a solid understanding of Google Ads billing procedures and be able to navigate the platform with ease....

I'm in need of a desktop software that can analyze a specific type of data within a PDF table. The software should: - Read and extract data from a PDF table - Compare this data against another table - Identify and save matching data in the form of an Excel file. The tables in question will contain numerical data only. Ideal Skills and Experience: - Proficiency in developing software for Windows - Experience with data extraction from PDFs - Strong capabilities in data comparison and analysis - Knowledge in Excel formatting - Understanding of numerical data handling.

I have a specific custom Google map that I need data from. The data I require includes: Business name, Customers name, Address, City, State, Postcode, website, phone. Key points: - You will be scraping a specific custom Google map - The data needed includes Business name, Customers name, Address, City, State, Postcode, website, phone Ideal Skills: - Proficient in web scraping techniques - Expertise in data extraction from Google Maps - Experience in handling large datasets - Attention to detail for accurate data gathering. Ideally i would like this in a CSV format. There are aprox 720 records in the custom google map.

...key executives' name, etc. • Take pictures of the subject company and its vicinity, as per Confirmis’ standard operating guidelines. • Provide observation about the company to gauge activeness, e.g., staff working at the premise, loading/unloading of goods, etc. REQUIREMENTS: • Must be living in (or nearby) Pengkalan Weld, Georgetown, 10300 Pulau Pinang, Penang, Malaysia • Has a camera or phone/tablet of quality with a camera, internet access • Must be available during business hours (9 AM - 4 PM) on working days Please see the attached file for the site visit guideline. You are only required to deliver the pictures, video & observations and are not expected to put together a report like the Sample Report. Note: Milestone will be ...

I'm looking for a Chinese native speaker who's adept at navigating various online platforms and communities to source and connect with Chinese sellers that are active on the Amazon marketplace. Key Responsibilities: - Utilize Amazon seller forums, WeChat groups, Chinese seller communities on social media, and other platforms to identify potential sellers - Engage with sellers on different platforms to build relationships and network - Regularly explore new platforms and communities to expand our network of sellers The ideal candidate should: - Be a native Chinese speaker - Have a good understanding of the Amazon marketplace and the ways in which Chinese sellers operate on it - Be proficient in using platforms such as WeChat, Alibaba, LinkedIn, and Facebook for sou...

...of business, key executives' name, etc. • Take pictures of the subject company and its vicinity, as per Confirmis’ standard operating guidelines. • Provide observation about the company to gauge activeness, e.g., staff working at the premise, loading/unloading of goods, etc. REQUIREMENTS: • Must be living in (or nearby) Via Monte Baldo, Villafranca di Verona, Verona, Italy • Has a camera or phone/tablet of quality with a camera, internet access • Must be available during business hours (9 AM - 4 PM) on working days Please see the attached file for the site visit guideline. You are only required to deliver the pictures, video & observations and are not expected to put together a report like the Sample Report. Note: Milestone will b...

I need a very basic, 3D sketch of a house roof for visualization purposes. I need both the outside view of the roof, and the inside. The house box/frame is a simple rectangle. I have height, width and lenght of the house. I have also the angle of the roof and the dorm-roofs. There will be windows, but no balconys or other external visualisations. Clipped gambrel with dormers on each side of the roof, see example image. We will have a video call while you draw, so that I can give you a constant feedback.

I'm in need of a specialist in lead generation who can provide both B2B and B2C leads. Industry specifics have been left open-ended for the B2B leads, giving you the freedom to use your expertise and bring in results from multiple arenas. Key outcomes I expect: - The generation of qualified leads - The specific information required for each lead: Name, Email, Phone number Ideal Skills: - Experience in lead generation for both B2B and B2C - Excellent communication skills - Prompt and reliable You should be ready to showcase examples of your past successful lead generation efforts. Let's bring in some fresh leads and grow together!

As a client, I'm looking for a Flutter expert to develop a cross-platform app that provides real-time trading experience on iOS, Android, Web, Windows, and MacOS. The app will have the following features: Login/Authentication, Push notifications, Database integration, Realtime trading on stocks with demo accounts. Skills and experience: - Proficient in Flutter and Dart - Experience with cross-platform development for iOS, Android, Web, Windows, and MacOS - Strong background in implementing Login/Authentication - Familiarity with incorporating Push notifications - Competence in integrating database systems - Prior experience with real-time stock trading apps would be a plus The primary goal of the app is to provide a seamless real-time...

I'm in need of a seasoned IT professional who can set up a Windows-based VPN server for my company. The primary purpose of this server is to allow our employees to access the company's resources securely from remote locations, which is currently a pressing need for us. Key Requirements: - Configuration of a VPN server on Windows OS - Setting up a secure connection for remote employees - Allowing simultaneous connection for a small user base (1-10 users) Ideal Skills and Experience: - Proficiency in Windows OS - Hands-on experience with VPN server configuration - Knowledge of network security best practices - Prior experience with remote access solutions Your expertise will play a crucial role in enhancing the security and efficiency of our remote work set...

I'm in need of a professional who can translate an advanced-level English agreement into Arabic. This is an urgent task, and the translated document is needed within a week. While the document in question is quite complex, legal or technical, there's no need to have the translated document proofread by another Arabic native speaker. It's crucial that the freelancer has a solid understanding of both languages and legal or technical terminologies. Experience translating similar documents would be ideal.

...seeking a developer to create a Roblox executor compatible on Windows. This program must feature: 1. Script Execution: - It should have the capacity to successfully execute scripts in Roblox games without interruption or failure. 2. Game Exploits: - The program should be able to identify and exploit weaknesses in the game for a better user experience. 3. User Interface: - Creation of a detailed, intuitive, and user-friendly interface is crucial. I prefer a UI design that is simple to navigate, even for new users. The ideal freelancer for this project will have robust experience in Roblox, an understanding of game exploiting methods, and the proficiency in creating user interfaces in different platforms, particularly Windows. A portfolio showcasing similar completed pr...

I am in need of a technophile with expertise in Microsoft Access databases. Your task will involve: - Populating my database with customer data which includes names, addresses, phone numbers, organisation affiliations, and details of last interactions. - Inputting sales transactions data which include dates, product names, and prices. The ideal freelancer should demonstrate an adept understanding of database management, particularly Microsoft Access, and be able to accurately input data with keen attention to details. Efficiency, accuracy and attention to detail will be paramount for this project.

I'm seeking assistance to install a Laravel Vue JS Inventory script on my local Windows 11 PC. - I need help to install npm and Node.js on my system before proceeding with the script installation. - The script is specifically designed for Laravel with Vue JS, so I require a freelancer with expertise in these technologies. - Familiarity with XAMPP is a plus, as it will be used to run the script on my local server. - The ideal candidate should be able to walk me through the set-up process and provide any necessary troubleshooting support.

...right candidate will work closely alongside us to ensure all content is translated correctly and localised to the specific market. This is an ongoing relationship that will cover a range of content needs. The current scope of the project involves checking the translations for our website content, blogposts, newsletters, manuals and other side projects. ABOUT THE CANDIDATE We are looking for a native speaker experience in translation work. You have a Bachelor’s degree relating to journalism, communications, marketing, linguistics or your specialist language. You are knowledgeable about SEO content and localisation. You also have proven experience with technical texts and understand good document design....

I'm in urgent need of a skilled freelancer who can help me set up a system to remotely control a headless Windows virtual machine using graphical applications. The virtual machine will specifically be running WhatsApp Desktop. Key project components: - Setting up a Windows virtual machine - Configuring it to run WhatsApp Desktop - Implementing a system for remote control Ideal Skills: - Proficiency in Windows OS - Experience with virtual machines, particularly setting up headless ones - Knowledge of remote access software - Previous experience setting up and using WhatsApp Desktop This project has a tight deadline, and I need someone who can start immediately and complete the task ASAP. The successful freelancer will have excellent communication skills and be ...

I am searching for an experienced freelancer who is proficient in document formatting for Windows. I need my company manuals format fixed, the table of contents, page number, spacing, etc needs to be fixed The project entails: - Formatting 1-5 company manuals to enhance readability and presentation. - Ensuring consistency in all documents, including headers, footers, and design elements. Ideal candidate: - Proficient in MS Word formatting for Windows. - Experience in handling company manual formats. The selected freelancer will help me to deliver professional and well-structured company manuals.

...designer to create a large, modern and sleek signage campaign for my RV park in Arizona. We have key locations throughout our rural area where we intend on adding sigange. We need the following signs made: 1) A two-sided highway sign: 119 inches wide, 59 inches tall; (this is strictly for our rental business and can be clean and simple. Our logo, something surrounding RENTAL HOMES and our contact phone number; 2) Three highway signs: 8 ft wide, 8 ft tall; graphics can be the same on each side. 3) A one-sided large billboard sign; 22 ft. 2 1/2 inches x 127 inches tall; 4) A new real estate development sign; coming soon; new homes; something to get the community excited that something new is coming soon. Key Requirements: - Include RV Park name, contact number, website and ...

EASY WIN WITH CLEAR INSTRUCTION HERE Feel free to use ai to make ideas but repetitive ai entries will not get chosen. VisiShine (short for Visible Shine) is an exterior cleaning company. We specialize in cleaning windows and solar panels along with pressure washing business and home exteriors. We give back to the community by including built in litter cleanup in every job. Our company colors are sky blue and white. I am going to attach an image that I really like. It is the darker of the 2 images. You will win this contest if you give me an ALMOST IDENTICAL image... with a few specifications. I want that image with "VisiShine" where it is but with "Exterior Cleaners" in the section underneath our name. I also want less navy blue incorporated into the image and ...

...features required: - User-friendly interface - Company Colors are Navy Blue, Burnt Orange, White, Black, and Grey. We would love to stick to that color theme. - Logo should be displayed on top of ALL pages, along with business phone, address, and business hours. - Business Phone, address, and business hours should be displayed on a burnt orange color border in white color font. - On the HOME PAGE we must have a button for "CALL FOR APPOINTMENT" and "REQUEST A QUOTE" - On the " REQUEST A QUOTE " page...the fill-out form should have the customer's FIRST and LAST NAME, PHONE, answering if the job requested is a COMMERCIAL PROPERTY OR RESIDENTIAL PROPERTY checking (yes or no). A QUESTION BOX (Which is OPTIONAL if the customer ...

Looking for someone with advanced skills in Excel and PDF interactivity who can transform a multi-sheet excel document into ...transform a multi-sheet excel document into an editable PDF, while maintaining its ability to be converted back into an excel document. The purpose of this conversion is to enhance collaboration, hence the PDF should feature: - Interactive input fields that can be edited. - Checkbox and/or radio button functionalities. Also looking to add our company logo in the header and company info (addresses, phone numbers etc) in the footer. The ideal freelancer would not only support this conversion, but also maintain the original formatting to protect the sanctity of the document. Previous experience in similar work would be advantageous. Looking forward to your ...

I'm in need of a skilled developer who has exp...and JS to help create a high-quality desktop application running on Windows. Key Requirements: - The main purpose of this application is to process data efficiently, with a user-friendly interface. - Given the need for cross-platform support, it should be designed as a web-based desktop application. - The application will be running on Windows, so experience with the Windows platform is essential. Ideal Skills: - Proficiency in both C# and JS, with a strong understanding of desktop app development. - Experience in UI/UX design would be a plus, ensuring the application is not only functional but also aesthetically pleasing and easy to navigate. - Knowledge of deploying desktop apps on various platform...

I'm looking for a professional who can s...professional who can set up an automatic download of mainly .csv files from FTP, SFTP, https and webscraping-login. The script should be configured to run daily/weekly at pre-defined time - configurable for each file. Requirement: Check after each download that the download has actually been downloaded. Notify user if any errors occur. Key Requirements: - Configure FTP download automation on Windows enviroment or hosted. - Schedule the download to occur at defined day/hour. - Check if download has been succesful. - Clear commented code. I only respond to bids where the bidder clearly has read the description...sorry (not really sorry, lets not waste each others time :) ) I prefer fixed price, but have entered hourly - let me know y...

I'm looking for a customer service representative who can handle incoming calls. Requirements: - The ideal candidate should have a background in customer service. - Excellent communication skills are a must. - The position is part-time, offering flexibility in your schedule.

I'm looking for a skilled developer to update the controllers in my Laravel backend for my React Native application. Specifically, I need help with a single task to start, and if that goes well will task additional items thereafter: 1. Laravel Backend has a 'ProviderController' which sends 'Provider' results to app based on distance within radius. There is a 'Mobile Only' option that when checked is not limiting results to within that radius. The query is a bit messy, but is likely where the change needs to be made (see attached). App is published to TestFlight already and should not need to modify React Native source to address this, but can provide if needed. Ideally looking for a developer who can fix this bug fairly qui...

Russian Recording Project We have a project, that needs Native Russian speakers, we will give you the text, and you need to record 626 Short sentences. you just need to download our software, to read our text and record it, it's a very easy job. 1. You will need to record in a quiet place without loud background noise. and without echo. 2. Each person is $13 dollar for 626 sentences record. If you are interested please let me know sure.I will contact u. A Good Opportunity For New Freelancers For taking 5 Star Review after their completion of the project. Thanks :

I'm looking for a skilled professional to create a Load, Functional testing, Security testing LLM to test our internal websites. K...professional to create a Load, Functional testing, Security testing LLM to test our internal websites. Key Requirements: - Operating System: The LLM must be compatible with Windows. - Reporting: The LLM should report test results through an integrated dashboard. - Testing: The LLM must be capable of performing Load, Functional, and Security testing. - Test Cases: The LLM must be able to create tests cases based on the current state of the website. Ideal Skills and Experience: - Prior experience in creating and working with LLMs. - Proficiency in load, functional, and security testing. - Familiarity with Windows OS and dashbo...

Seeking assistant for contact research, Data entry for contact phone & emails. Job Duties: Gather Contact Info Email & Phone Number for the following U.S States: 1. Utah ( Primary Home State) 2. Nevada 3. Idaho 4. Wyoming 5. Arizona 6. New Mexico 7. Colorado -Locate all Roofing companies by state and compile a list for me to email & offer property claim insurance services. - Locate all Restoration & Mitigation Companies by state to offer insurance property claim services. Contact Emails for HR preferred/ management. Email & Phone compiled into a spreadsheet or what you see best fit for a email list to send out. I am based in Utah so starting homebase and spreading out to surrounding states after. would like to have 100+ ...

I'm looking to create a brief, engaging video that showcases my company's brand in a humorous light. Key Details: - Length: Less than 1 minute - Platform: Primarily for social media - Style: I'm looking for a video that has a play on words, something that will ...quality. - Humor: They should have a good sense of humor and a knack for creating content that resonates with a broad audience. - Branding: Experience in creating content that helps to build brand recognition will be highly valued. Looking forward to seeing your creative proposals. The name of our company is PharmaRegs. We are a pharmaceutical regulatory compliance company. When we answer the phone, prospective customers think that they are calling the wrong establishment. PharmaRegs sounds exactly like &...

...Responsibilities include having regular discussions across multiple dating platforms. The final goal is to quietly shift folks from dating applications to Instagram chat or Snapchat app. This gig runs on a per commission basis and will cost $5. My virtual assistant can close an appointment in 15 minutes or less. I'd imagine. Some minor fluff discussion is required. One out of every five leads to a sale in less time. So, for now, I'll put the fee at $5 ($10 for 2 close at freelancer.com and payments withdrawals/release is when $30 is reached or 6 close!) . A minimum of $150 to $300 a month can be earned from your phone. only working one hour or less per day I'll be delivering two canned lines. You simply use it multiple times, but you can customize it to ...

I have a mp3 sound file I would like play on page load and even though the phone is set to allow sound this is not working. <audio autoplay> <source src="" type="audio/mpeg"> </audio> Please only Android Developers Reply is a quick $10 Job

I'm in need of an experienced React Native developer to help me debug an issue with a hook in my app. - The hook seems to be causing unexpected behavior in the app but I'm not sure of the specific problem. - I'm not using any third-party libraries in the app that could be affecting the hook. I need someone who can efficiently identify and resolve the issue with the hook, ensuring that the app functions correctly without any unexpected behaviors. Please reach out if you have experience in React Native debugging and can help me with this.

...need of a professional who can create an advanced mobile monitoring app that is compatible with Android. The app should have the following features: - Live location tracking - Access to SMS and call logs - Social media monitoring - Screen recorder - Microphone access - Access to photos & videos I am looking for a freelancer who can ensure that the app provides full access to the target phone's data for comprehensive monitoring. The successful candidate should have experience in creating similar apps and should be able to guarantee the security and privacy of the data collected. Skills required: - Android App Development - Mobile Security - Data Encryption - Experience with phone monitoring apps It's important that the app is u...

I need a competent translator who can translate text from Polish to English. The content of the text is non-technical and non-legal in nature, falling under the general category. - Unknown Word Count: The exact word count isn't clear, so...translator who can translate text from Polish to English. The content of the text is non-technical and non-legal in nature, falling under the general category. - Unknown Word Count: The exact word count isn't clear, so please be prepared for flexibility in this regard. - Page Range: The text that needs translating is estimated to be between 1-5 pages in length. The ideal candidate will be a native English speaker who is also proficient in Polish, with experience in translation work. Reliability and commitment to deliver quality work...

I'm looking for a talented designer who can create visually appealing banner ads for LinkedIn to promote my products. Key details: - Primary Goal: I want the banner ads to encourage viewers to fill out a lead form. - The lead form should collect: Name, Email, Phone number and Purpose Ideal Skills and Experience: - Proven experience in creating banner ads, preferably for LinkedIn. - Nothing else matters - Your past experience does NOT matter - Your education certainly does NOT matter - So long as you can give me about 6 banner ads at a very competitive cost, I am fine WHAT SHOULD THE AD LOOK LIKE - Nothing much ! Very Simple Really! - Need an image of a corporate trainer carrying out his training session - A group of people smartly dressed are getting the training We ca...

I'm seeking Spanish speakers for a project where you will be reading conversational scripts in a formal tone. Your role will be to: - Read Spanish scripts in a formal tone - Ensure the scripts are conversational in nature The ideal freelancer for this job would have: - Native proficiency in Spanish - Ability to convey a formal tone - Experience with voiceover work would be advantageous - Knowledge of different regional Spanish accents is a plus. PLEASE FIND ATTACHED THE PROCEDURE YOU NEED TO FOLLOW TO DO THE RECORDING.

I'm looking for a Flutter developer who can create an application that simply redirects to an existing responsive website, www.saveonrx.net. The main goal is to give this website a feel of a native mobile application, while supporting both Android and iPhone devices. Key Details: - The application should be built using Flutter. - There is no requirement for extra functionality beyond redirecting to the site. The ideal freelancer for this project should have: - Experience in developing with Flutter. - A good understanding of mobile application design. - Ability to work with provided assets, including logos and brand colors. Please share your relevant experience.

I'm looking for a skilled Python developer who can create a tool that can convert VCE (Visual CertExam) files to PDF. The script needs to be compatible with Windows, and ideally, it should: - Provide output in a format that is both viewable and editable - Operate solely via a command line interface Ideal applicants will have experience in Python programming, data manipulation, and an understanding of file conversion processes. A background in creating command line tools is a plus. Your experience in delivering clean, efficient code is highly valued. Please provide examples of previous work when applying. I'm on a tight budget ($10 - $15)

I need a 3D Sketchup model of an existing garage, based on attached CAD plan & photos. Only exterior modeling is required: the basic building shape, with doors & windows included. Thanks!

We are a call center and we are looking for a remote Portuguese phone operator for a back office/sale job . Part-time or full time. Working hours are Portugal day hours. It needs to be native level, with a pc, good internet connection, good headset and a quite place where to work. We pay 3$ fix + bonus. Bid with 10$ hours (test period). Please write a couple of line of your self or better send a CV. Thank you

I'm in need of a distinctive, yet friendly and approachable female voiceover artist who can bring to life our company’s phone system in English. Your voice will provide the first interaction many customers have with our company, so it must be warm, welcoming and easily understood. Attributes required: - Fluent English Speaker - Female artist - Able to convey a friendly and approachable tone - Previous experience preferred in similar assignments The deadline for completion is flexible, however my preference would be for it to be completed promptly. Please submit a short sample of your voice work as part of your proposal.

Overview: We're looking for a talented React Native developer to improve our mobile app, which is similar to TikTok and made for artists. This project involves working with an existing app using Expo. Project Context: Our app enables artists to share their creativity through multimedia posts that can include: - Video - Image - Combination of sound and image The app leverages Cloudinary’s CDN for media hosting. The APIs are developed using API Platform (Symfony); however, this role does not require API development work. Mission: 1 - Post Enhancement (See attached file): - Implement Text overlay on videos and images like TikTok. - Add functionality to trim video durations like TikTok. - Add functionality to resize imag...

...interested in more details. You can start this week if you are available. You can find more details on the link below: For Japanese audio transcription projects, the specific requirements are as follows: Language: Japanese Project type: transcription, material taken from short video app, audio content close to daily life Personnel requirements: must be based overseas, and must be Japanese native-level. Educational background is at least high school. Original audio length: 6-8s Effectiveness rate: 70% Project duration: Start at the end of April & early May and last for about 3 months Delivery Platform: Customer Platform Total amount of data: 500 valid hours shared by all of people until finished Accuracy requirement: 95% Thank you and

...who is proficient in Java and familiar with the DJI drone SDK. Seeking individual with HTTP and DJI SDK experience to add features to DJI Ground Control Software. The application must transmit and handle HTTP REQUEST to server, display popup messages, play notification audio, and auto-upload waypoint to a selected drone. Key requirements: - You must have experience in software development on Windows OS. - Proficiency in Java is a must. Experience with DJI drone SDK is highly preferred. - The main feature to be added to the software is automatic drone flight path planning. Key responsibilities: - Integrate the DJI drone SDK into my existing software. - Implement automatic drone flight path planning feature. This project will give you the opportunity to work with cutting-edge ...

I'm looking for a professional who can develop a Chrome extension that will automatically respond to all WhatsApp messages. Key Requirements: - Operating System: The extension should be designed for Windows. - Message Response: I need the extension to send a simple "hello world" message in response to every message received on WhatsApp. -Logs: store logs - User: The final product will be used for personal use, so no team functionality is necessary. Ideal Freelancer: - Proficient in Chrome extension development. - Experience with the WPPconnect wa-js listener. - Strong understanding of WhatsApp's API for message reception and sending.

Task is to debug the following : 1) Google login/ Registration logic 2) Apple login/ Registration logic 3) EmailAndPAssword login/ Registration process All these are in firebase auth Debug and clean code and fix errors - You must be able to build IOS version - After finish task You must build release builds - You must submit your code in github in separate branch Duration 3 days Budget 200$

I'm looking for a developer who has already done or can do this work as soon as possible. This is a slot machine that a user can roll up/down with his finger. When the result is less than 0, then produce error sound otherwise produce success sound.