Fujitsu has already released products that recognize a person's vein pattern in order to grand access to to device or service. This time Samsung Electronics is flirting with the idea of a smartwatch that can recognize you by your veins. In a patent filling with the U.S. Pattent Application Office dated Feb.4 2016, Samsung describes technology that works similarly to a fingerprint scanner in a smartphone. Only instead of your fingertip, the watch takes a picture of your "vein structure and characteristics," and stores that in its database. Then, any time you have to authenticate, it’ll ensure your veins match the initial imprint.

The patent suggests this technology could be implemented into a wearable device.

The patent suggest that this kind of authentication is possible by equipping the smartwatch with a camera sensor configured to capture a vein image of a user. Of course, the device also includes a processor configured to control the sensor.