Honestly, to effectively market this technology in today's waters, they have to say that it's kept local.

If they send out 8 bytes of your fingerprint data hidden in every picture you take (so your fingerprint can be regenerated by looking at your first 500 pictures) I doubt anyone will ever find it.

Makes me think of all these companies that your passwords are secure until one day, someone hacks their database and decrypts them. When confronted, the company says "But they were very secure, you should have mentioned that by 'secure' you meant "with one way encryption".

But that's exactly what they want you to think.