US 12,474,420 B2
Sensor-based tamper detection for mounted electronic devices
Aditya Shailesh Ghadiali, Mountain View, CA (US); and William Alan Saperstein, San Carlos, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Jul. 16, 2024, as Appl. No. 18/774,690.
Application 18/774,690 is a continuation of application No. 17/624,967, granted, now 12,078,694, previously published as PCT/US2020/044049, filed on Jul. 29, 2020.
Claims priority of provisional application 62/880,625, filed on Jul. 30, 2019.
Prior Publication US 2024/0369650 A1, Nov. 7, 2024
Int. Cl. G01R 33/038 (2006.01); G01D 5/14 (2006.01); G01R 33/07 (2006.01); G08B 13/14 (2006.01); G08B 13/196 (2006.01); H04N 23/50 (2023.01); H04N 23/667 (2023.01)
CPC G01R 33/038 (2013.01) [G01D 5/145 (2013.01); G01R 33/072 (2013.01); G08B 13/149 (2013.01); G08B 13/19632 (2013.01); H04N 23/50 (2023.01); H04N 23/667 (2023.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device comprising:
a mounting device configured to couple to a surface;
a head removably coupled to the mounting device, the head including a housing;
a magnet attached to the mounting device;
a first sensor disposed within the housing, the first sensor configured to detect a magnetic field strength value associated with the magnet when the head is in an initial position relative to the mounting device and detect a deviation in the magnetic field strength value when the head is moved from the initial position to a new position relative to the mounting device, the initial position defining a first orientation of the first sensor relative to the magnet, the new position defining a second orientation of the first sensor relative to the magnet that is different from the first orientation, the new position being different from the initial position, the first sensor being configured to indicate tampering of the head when the deviation crosses a first threshold value; and
a second sensor disposed within the housing, the second sensor configured to provide acceleration information related to acceleration and movement of the housing, the second sensor configured to indicate tampering of the electronic device when the acceleration information crosses a second threshold value.