Appeal No. 95-0143 Application 07/865,849 means for enabling said key means to open said lock upon determination by said means for comparing that said encrypted seed numbers match. 10. A lock mechanism, comprising: a bolt movable between a locked and an unlocked position; a lock cylinder having a bolt cam in contact with said bolt to prevent said bolt from moving when in a locked position, and operable upon actuation to move said bolt to said unlocked position; retractable blocking means in contact with said bolt for preventing said bolt from moving to said unlocked position when unretracted by blocking motion of said bolt to said unlocked position and allowing said bolt to be moved to said unlocked position when retracted; an electrically powered solenoid operable to retract said blocking means upon switching of power thereto; and means for selectively powering said solenoid, comprising a portable key means for operating said lock cylinder and including a power supply. 17. An electronic security system, comprising: a lock, including an access memory for storing access data< a data communication terminal coupled to a communication channel, microprocessor means for receiving data from said data communication terminal transmitted over said communication channel including access data,l and for storing received access data in said access memory, means for receiving access data from an electronic key, 3Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 3, 2007