A user of a computing device may be detected, and their location determined, based on radio frequency signals transmitted by the computing device.  The RF signals may be for example Bluetooth or Wi-Fi signals that are received by a localization device.  The localization device comprises a plurality of RF receivers for receiving the transmitted RF signals.  The RF receivers are synchronized by a single local master clock signal, allowing the localization device to determine the computing device’s location based on a time difference of arrival of the transmitted signal at the receivers.

US provisional application: 62/929,406 (filed Nov. 1, 2019)

Inventor(s): Ismail, K;  Ghods A

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