Qualcomm has developed an ultrasonic fingerprint sensor which can operate under the glass of a mobile device avoiding the need for a mechanical home button. It also detects heartbeat and blood flow. The sensor can scan through OLED display stacks of up to 1200 µm, along with enrolling and matching, and can scan through up to ...
Read full article: Qualcomm fingerprint sensor enables virtual home button
from Electronics Weekly https://www.electronicsweekly.com/news/business/503063-2017-06/
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