Devising safe passwords which can not be hacked is a robust industry. There have been all kinds of encryption devices that have come into play to protect the password of a person. Biometrics have been some of the more promising passwords. The retina scan, the fingerprint and now apparently the shape of your heart.

At the University of Buffalo researchers have come up with a low level Doppler radar that measures your heart, which unlocks your computer operating system. What’s more the radar will continue to monitor your heart so that no one else can step in and run your computer once the system has been unlocked.

Assistant Professor Wenyao Xu assures users that the strength of the radar is less than the WiFi waves and does not pose a health risk to the user. The reader is about five milliwatts which is less than 1% of the radiation that a user of a smartphone is exposed to. So constant use is not going to affect the individual’s health.

The science project is one that will ensure privacy for a person’s computer. Considering that no one but the owner is able to use the system, this could be one of the most unique ways of ensuring security for personal documents.