Passwords—who needs passwords as long as the old ticker is ticking. The Nymi is a new silicone bracelet designed as a "wearable authentication device." The wristband relies on authenticating identity by matching the overall shape of the user’s heart wave .”

The wave is captured via an electrocardiogram sensor. Unlike other biotech authentication methods — like fingerprint scanning and iris-/facial-recognition tech — the system doesn’t require the user to authenticate every time they want to unlock something. Because it’s a wearable device, the system sustains authentication so long as the wearer keeps the wristband on.

The device is currently selling for $79 and aims to replace your keys and passwords and will initially support Windows, OS X, Android, and iOS, allowing users to unlock their device and log in to apps and websites without pressing a key. (