Patent ID: 9576448
Date: 2017-02-21
CPC Classifications: G08B

Claim:
1. A method for monitoring security of an area, comprising: determining whether there is at least one first mobile device accessing a wireless access device that serves said area; starting to monitor a breach of security conditions, if there is no said at least one first mobile device accessing the wireless access device; and generating an alarm signal and sending said alarm signal to one of said at least one first mobile device, if the breach of security conditions is detected, wherein the breach of security conditions is monitored by: receiving a signaling from a second mobile device; deriving an identifier of said second mobile device from said signaling; comparing the identifier of said second mobile device with the at least one identifier of said at least one first mobile device in a security list; and determining that the security conditions have been breached if the identifier of said second mobile device does not match any one of said at least one identifier of said at least one first mobile device in the security list.