Browser Fingerprinting Web Application

Hello Freelancers, PLEASE READ COMPLETE DETAILS ABOUT THE PROJECT BEFORE APPLYING. THIS IS NOT A HUMAN PHYSICAL FINGERPRINTING APPLICATION. I need someone who can develop a Web application which can generate unique browser fingerprint HASH and can store it in DB, when the next time user arrives at the site, application can detect the visitor by matching current fingerprint HASH with existing HASH in DB and using API call can provide us information about the user if he already exists our DB. Similar to [login to view URL] [login to view URL] [login to view URL] [login to view URL] Digital Fingerprint HASH will be generated using various data points from User's Device/Browser (Not only cookies - Cookies can be deleted and even if the cookie is deleted, the fingerprint should be same) Watermarking. This Application will receive daily traffic of approx 10-50K. So, the developed application should be scalable enough to handle that much traffic. The Application will have only backend UI for doing CRUD operations, application execution script (a Normal JS script) will be used/included in a separate landing page just like you include a Google Analytics Library on your Page we can simply include this script at any of our pages and when a user visits our page, this JS will invoke and gather data points and perform checks. The user won't see any kind of UI other than a loader screen while this application performs its work in the background. The application has somewhat similar functionalities - [login to view URL], [login to view URL], EverCookie, ClientJS, ImprintJS, Am I Unique, Panopticlick The application will also include various fraud check factors like Proxy, Bot... will be discussed in later stage The application will become part of a larger project and details will be discussed later. Technologies to be used - NodeJs, MongoDB/CouchDB, Rest APIs... Need the following things from the applicant - WHAT IS YOUR UNDERSTANDING OF THIS PROJECT? - HAVE YOU EVER DEVELOPED ANYTHING SIMILAR TO THIS PROJECT? (DEVELOPERS WITH SIMILAR EXPERIENCE WILL BE GIVEN PREFERENCE) - CAN YOU PROVIDE ANY KIND OF TIME AND COST ESTIMATION AT THIS STAGE?