STMicroelectronics ToF Sensor Brings Energy-Saving Presence Detection to PCs

STMicroelectronics has found a novel application for its FlightSense Time-of-flight (ToF) sensor, which has now been integrated into Intel’s Context Sensing technology. The ToF sensor will specifically be used for presence detection, conserving power and improving security by letting the computer know when a real person is sitting at the screen.

The ToF sensor can be hidden in the bezel of a laptop or a PC. When the user leaves, it will notice that the person is gone, locking the computer and switching to a low-power sleep state. The sensor will then wake the computer up when the user returns, triggering a facial recognition scan to allow them to log back in without pressing anything on the mouse or keyboard.

The feature is designed to save energy and boost security without creating more hassle for the end user. ST’s sensor is able to distinguish a human being from an inanimate object like a wall or chair, reducing the likelihood of a response when no one is around.

“The development of user presence detection brings extended battery life, improved data protection, and increased convenience to PC users,” said STMicroelectronics Executive VP Eric Aussedat.

ST semiconductors have been integral to a wide range of low-power solutions. The company’s tech has previously been featured in a voice activation system from Sensory, Inc., as well as Valencell’s Benchmark biometric sensor platform.

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July 4, 2019 – by Eric Weiss