77070056
Dec 22, 2006
door entry controllers, radio frequency identification card readers, access control devices comprised of integrated controllers and radio frequency identification card readers, and host interface units positioned at a doorway for a paired door entry controller and radio frequency identification card reader, namely, computer hardware and computer operating software all for the specific application of enabling communication between the paired door entry controller and radio frequency identification card reader to control access through the doorway to buildings or secured areas
Electrical and Scientific Apparatus