Researchers at Binghamton University have recently come up with a new method of security and are calling it brainprints. It is like fingerprints but with the brain instead. They say a machine will record the responses a person makes to specific images or words and then can use them to 94% accuracy to determine that person later on when they try to gain access. It provides a much more intense sense of security as a person's fingerprints can be stolen but brain patterns aren't so easily stolen. I think it'd be pretty cool, but like the article says it is very expensive and would only be practical for high security places such as the pentagon.
For more info: Brainprints
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