http://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/blog/browser-device-fingerprinting
Fingerprinting can help determine if an internet banking session has been hijacked, and can identify credit card fraud. For example, fingerprinting can help determine if multiple requests that appear to be from multiple cards, each with different IP addresses, actually originate from the same device.