Remembering passwords can be a headache; instead, why not log into your computer with a scan of your eye?

The hardware and software to make iris scanning a key feature is now reaching smartphones and PCs. The process is simple: An infrared scanner on a device will scan your iris, and verify its authenticity against encrypted information stored on the device.

It’s a notable feature in Samsung’s Galaxy Note7 smartphone, which was announced on Tuesday. The smartphone has an iris scanner — used to log in — on top of its screen.

There’s an uneasy feeling about the flash of light projected into your eye, but experts believe iris scanning is a more secure form of biometric authentication than fingerprints.

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Kill a smartphone password with a scan of your eye