[venomsnake]

Somebody other than the user to put it there. Because if user puts it there, he can read it too. Or is there something I don't understand?

[bryanlarsen]

No, it's write-only. You can ask "does this fingerprint match the one I stored earlier?", but you can't read out the original fingerprint.

[TazeTSchnitzel]

> Somebody other than the user to put it there.

No, the user can install software on the chip.

> Because if user puts it there, he can read it too.

Not all communications links are two-way.