Programmable key for a security system for protecting merchandise

A security system for protecting an object comprising:

• a key operated security device for attachment to the object, said security device containing a first security code;
• a key programmed with a second security code to actuate the security device when placed in proximity thereto;
• a first communication system operable for effecting communication between the key and the security device for enabling the comparison of the second security code of the key to the first security code of the security device;
• a remote programming station containing a second communication system operable for effecting communication between the programming station and the key, said remote programming station randomly generating the second security code and programming the second security code in the key using the second communication system;
• and
• a timer in the key for automatically invalidating the second security code after a predetermined time period.

A programmable key for use in a security system for protecting items of merchandise, said key comprising:

• a) a housing;
• b) a control circuit including a controller, a communication circuit and a security code memory mounted in the housing, said controller initially receiving a security code from a remote source through the communication circuit for storage in the security code memory and for subsequent transmission of said security code by the communication circuit to a security device adapted to be attached to an item of merchandise;
• and
• c) a power source in the housing for powering the control circuit and a control switch for effecting the transfer of the security code from the remote source to the security code memory.