By Hannah Kuchler

Cyber security experts and frustrated users have long agreed that the complex strings of letters and numbers used for passwords deserve to die. Now, the hunt for a replacement has been accelerated by the rise of wearable devices and the so-called “Internet of Things” which has created objects cannot be controlled by a password.

Start-ups are searching for alternative biometric technologies, identifying users from everything from their voices to the vibrations of their skull.

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