if ear shape is unique for each person, it'd be nice to use it as biometric auth in phones. no stranger would be able to pick up calls, like they now can! (in fact, there're too many problems with it, so probably infeasible)

i think using rings for unlocking phones would be a good idea. you put on a ring, bring your phone close to it and enter the unlock password. next time you touch your phone with that ring, it unlocks automatically. if you take it off, it detects that, erases the unlock password from its memory and stops working that way.

more reliable than a fingerprint reader, easily disabled (just take it off), can't be emulated like other biometrics, but doesn't require entering the password each time either

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@leip4Ier
Oooh so that's how the magical rings in fantasy/legends worked?

I knew magic wands were really remote control clickers, but you just discoverd what magical rings were.

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