![An illustration of 4 people near eachother looking at their phones, with bluetooth signals emanating from the phones.](/sites/default/files/styles/ifde_hero/public/news/image/2020-04/MIT-Lincoln-Bluetooth-ANI-SL.gif?itok=4kU7fmN-)
Bluetooth signals from your smartphone could automate Covid-19 contact tracing while preserving privacy
A system that enables smartphones to transmit “chirps” to nearby devices could notify people if they have been near an infected person.
A new system led by MIT researchers can trace the recent encounters of Covid-19 patients while preserving privacy for all parties. It uses smartphones’ short-range Bluetooth “chirps,” matched anonymously between patients and those they’ve been near in recent days.
![An illustration of 5 individuals using their cellphones in a grocery store, with bluetooh signals emanating from the phones](/sites/default/files/styles/ifde_wysiwyg_full/public/news/video-images/2020-04/Screen%20Shot%202020-04-09%20at%209.47.49%20AM.png?itok=s6FObB65)
An MIT team has developed an automated, smartphone-assisted approach to effective contact tracing while preserving privacy.
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