Patent ID: 9483887
Filing Date: 2016-11-01
CPC Classification: G07C

Claim Text:
1. A method comprising: receiving and storing a first signal strength threshold associated with obtaining access to a first access control device; receiving and storing a second signal strength threshold associated with obtaining access to a second access control device, wherein the second access control device is different than the first access control device and the second signal strength threshold is different from the first signal strength threshold; receiving a first RF advertisement from the first access control device; obtaining a first received signal strength indication (RSSI) for the received first RF advertisement; selecting the first signal strength threshold based on a determination that an RF advertisement received from the first access control device is associated with the first access control device; determining that the first RSSI is greater than or equal to the selected first signal strength threshold; transmitting, in response to the determination that the first RSSI is equal to or greater than the first signal strength threshold, a first RF message to indicate that a device that received the first RF advertisement is proximate to the first access control device; receiving and storing a third signal strength threshold associated with obtaining access to the first access control device, the third signal strength threshold being lower than the first signal threshold; receiving and storing a fourth signal strength threshold associated with obtaining access to the second access control device, the fourth signal strength threshold being lower than the second signal threshold and the fourth signal strength threshold being different than the third signal strength threshold; scanning at a first scan rate for a second RF advertisement transmitted or broadcast by the first access control device; receiving the second RF advertisement message from the first access control device; obtaining a second RSSI for the second RF advertisement message; selecting the third signal strength threshold based on a determination that an RF advertisement received from the first access control device is associated with the first access control device; determining that the second RSSI is greater than or equal to the third signal strength threshold; and scanning, in response to the determination that the second RSSI is greater than or equal to the third signal strength threshold, at a second scan rate greater than the first scan rate for the first RF advertisement message.