Smartwatches can now track your finger in mid-air using sonar
From phys.org
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[center]University of Washington computer science and engineering and electrical engineering researchers demonstrate FingerIO, a new technology from CSE's Networks and Mobile Systems Lab that employs sonar to enable users to interact with their smartphones and smartwatches by gesturing or writing on any nearby surface. Credit: University of Washington Department of Computer Science & Engineering[/center]
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As mobile and wearable devices such as smartwatches grow smaller, it gets tougher for people to interact with screens the size of a matchbook.
That could change with a new sonar technology developed by University of Washington computer scientists and electrical engineers that allows you to interact with mobile devices by writing or gesturing on any nearby surfacea tabletop, a sheet of paper or even in mid-air.
FingerIO tracks fine-grained finger movements by turning a smartphone or smartwatch into an active sonar system using the device's own microphones and speakers.
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