Friday, October 5, 2012

Biometric Bracelet - To Recognise Wearer


Computer Scientist, Cory Cornelius at Dartmouth college in New Hampshire, has developed a device that uses a unique response to a weak electrical signal that identify the wearer. This wrist watch measures the person's bio impedance to recognise the user. The impedance varies with each person's wrist, and is a unique jumble of bone, flesh and blood vessels.

More and more devices are being computerised, which makes them equally prone to hacking. Medical devices getting hacked could have a very serious implications, hence, measures has to be taken to avoid such a scenario. The device developed by Cornelius is impervious to hack due to its clever use of bio impedance as a biometric to recognise the user. 

The device hold various benefits for authenticating users. For example, authenticating can match house hold members with their results in the house hold which shares an exercise monitoring device. The device functions by sending an alternating current through wearer's wrist from one electrode to another. The electrodes detect wrist resistance and reactivity, which are components of the impedance.
The processor is then made to filter the five patterns to train it with user's profile.

When made under test this device will be able to recognise 80 to 90 percent of the time.

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