Re: Passphrase vs Masking
Hmm, the mythbusters found the exact opposite with fingerprint readers. Their "off the shelf" USB reader couldn't be fooled with tape, or any of the simple options they'd thought of and they had to resort to making an artificial finger with the fingerprint cast into it to get past the thing.
With that, they went to the hugely expensive fingerprint activated doorlock that they'd snaffled from somewhere for the test. Their artificial finger opened that on the first attempt..........and so did a piece of sticky tape(!)
The funny part was that they'd only taken on the USB device in order to prove the concept before having a go at the serious kit.