New technologies are being developed to let people seamlessly unlock and control the devices around them using their biometric signals

A new technique under development at the University of Washington looks to use the body as a medium for data transmission. According to the small team of electrical engineers behind the research, the body is a more secure path to send signals than Wi-Fi or Bluetooth, and can be used for discrete tasks such as opening a smart lock to get into your home. By using your phone’s fingerprint sensor in one hand and holding the knob in the other, low-frequency signals pass through your body and enable the door to identify that you live there.

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