Patent ID: 8269602

Claim:
A security system comprising: an electronic door lock attached to a door that unlocks the door from a door frame after receiving an unlock signal, wherein the door controls access to, and is situated between, an inside and an outside; an electronic entry device located on the outside of the door for receiving a credential; a request to exit device located on the inside of the door, the request to exit device sending a request to exit signal when the request to exit device is activated; a sensor that detects that the door is in an open state or a closed state; and a logic unit connected to the electronic entry device, the request to exit device, and the sensor, wherein the logic unit determines: a loose door scenario if no valid credential has been received, there is no request to exit signal, and the sensor has detected that the door has been in the open state for a first length of time that is shorter than or equal to a threshold time limit; and a forced open door scenario if no valid credential has been received, there is no request to exit signal, and the sensor has detected that the door has been in the open state for a second length of time that is longer than the threshold time limit.