Patent ID: 9520939
Filing Date: 2016-12-13
CPC Classification: G07C,H04B,H04K

Claim Text:
1. A method of operating an access authorization device, said method comprising: storing a plurality of unique identifiers corresponding to mobile wireless communications devices authorized to control an access device used to control access to an area; providing identification information corresponding to said access device to a light emitting device by way of a power line network; receiving a first hashed value from a mobile wireless communications device, said first hashed value having been generated from said identification information corresponding to said access device and a unique identifier corresponding to said mobile wireless communications device seeking to trigger unlocking of said access device; receiving, from said mobile wireless communications device, said unique identifier corresponding to said mobile wireless communications device; generating a second hashed value by hashing said unique identifier corresponding to said mobile wireless communications device with said identification information corresponding to said access device; determining if said first hashed value was generated from one of said mobile wireless communications devices authorized to control said access device based at least in part on determining if said second hashed value matches said first hashed value; and sending an access command for unlocking said access device after determining that said first hashed value was generated from one of said mobile wireless communications devices authorized to control said access device.