Unlocking our phones is quite the hassle. Sticking a PIN or password on the lock screen is your most reliable option, but inputting that information every time admittedly gets old. There's face unlock, but that's too easy to circumvent. As for fingerprint scanning? The required hardware isn't exactly widespread. So now Descartes Biometrics is offering users the ability to unlock their smartphones... using their ears.

Once installed, ERGO serves as your phone's lockscreen.

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