Get unique, static id from a device via web request

Question

I have an MVC application that I would like to add some custom stats to. For some of the stats, it would be nice to have a unique identifier for a device.

For examp

Answer 1

other than the IP

If your site doesn't require any sort of authentication in order to serve this content, the IP address is the only thing you could get to identify clients, and even this might not be unique, for example you could have two clients behind the same proxy => no way of distinguishing those requests in this case. Another possibility is to use cookies, but that sort of falls in the first category => authentication.