Patent ID: 11862000
Assignee: VERIZON PATENT AND LICENSING INC.
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 18:
19. The non-transitory computer-readable medium of claim 18, wherein the one or more instructions, that cause the device to determine whether the person is entering or exiting the zone over the time period, cause the device to:
determine, at a first time, a first phase associated with a first access point of the one or more access points;
determine, at the first time, a second phase associated with a second access point of the one or more access points;
calculate a first phase difference based on the first phase and the second phase;
determine, at a second time, a third phase associated with the first access point;
determine, at the second time, a fourth phase associated with the second access point;
calculate a second phase difference based on the third phase and the fourth phase; and
determine whether the person is entering or exiting the zone based on the first phase difference and the second phase difference.