[gamegoblin]

I did this so I can unlock my phone with my snowboarding gloves on. I can unlock with the nose and then press the texting app button with my nose to read tests.

[sjwright]

Do we know if nose-prints are particularly unique? Or even unique in the context of how fingerprints are typically analysed?

[joshuata]

I did this and then tested it against several friends and family. I could only unlock the phone about 75% of the time, but I never got a false positive after about 20 different tries over the next week or two (cleaning the sensor regularly, of course)

[cmdrfred]

I'd guess probably not, but as a 'password' it might be suitably random if you only get 5 attempts.