Patent ID: 9082244
Filing Date: 2015-07-14
Classification: G07C

Abstract:
1. A method of controlling access to an area, comprising the following steps: a. one of i) automatically transmitting an activation signal to an activation signal receiver directly connected to a mobile communications unit within a predetermined range from a transmitter directly connected to an access code receiver unit, the transmitter being active while the access code receiver unit is in a deactivated state, and ii) receiving the activation signal automatically transmitted from a transmitter directly connected to the mobile communications unit within the predetermined range using the activation signal receiver directly connected to the access code receiver unit, the activation signal receiver being active while the access code receiver unit is in the deactivated state; b. activating the access code receiver unit to an activated state from the deactivated state with a control signal from the activation signal receiver to an additional circuit of the access code receiver unit to switch on a power supply for freeing access to the area when the mobile communications unit is located within the predetermined range of the activation signal and the activation signal is received, wherein the access code receiver unit in the activated state is powered and the access code receiver unit in the deactivated state is unpowered; c. receiving at least one access code from the mobile communications unit using the access code receiver unit when the access code receiver unit has been activated; d. checking the at least one access code with the access code receiver unit; and e. freeing the access to the area if the check is successful.