javascript - Unique device identification

Question

We are developing in-house web-based application for viewing data reports while targeting on smartphones and tablets. Our customer asked us for possibility that only certain devices could access the content. Hence we use technologies based on javascript/HTML5 we are no capable of reading unique ID like IMEI or device uuid. The idea is to be able to automatically create time-independent fingerprint of device with above mentioned technologies.

The question is are we able to create unique device fingerprint with javascript/HTML5?

The clue might be information available or known by browser (e.g. http://browserspy.dk/)

Answer 1

You can use the fingerprintJS2 library, it helps a lot with calculating a browser fingerprint.

By the way, on Panopticlick you can see how unique this usually is.