Access control systems; keypad readers and keypad access units for use with access control systems; readers for reading magnetically encoded swipe cards; readers for reading cards, fobs and tokens containing an RFID module and inductor coil; readers and programmers for use with magnetically encoded swipe cards, RFID proximity cards, fobs and tokens; biometric readers; proximity readers for electrical door operators and locks incorporating hands-free access control connectivity; proximity readers for electrical door operators and locks with long range capabilities; controllers to electrically operate aforementioned readers; controllers to electrically operate, link and report events from aforementioned readers to computers and local area networks; controllers for electrically operated locks and motors to open and secure doors and barriers; power supplies for use with access control apparatus; magnetically encoded cards, encoded and RFID cards, fobs and tokens, encoded cards with magnetic strip and RFID module; computer software used to control access to and within buildings; local area network hardware and software for managing and communicating data relating to building security and access control; modems; controlled access security apparatus, namely, electronic locks operated through the use of keycards, through the use of keypads or a combination of keycards and keypads; data security apparatus, namely, local area network hardware controlling access through locks operated by keycards or keypads or both and data stored within the network and received from the keycards and keypads, security control, monitoring and warning apparatus, namely, electric and electronic video and audio surveillance equipment for monitoring and controlling access to and within buildings; vehicle license plate recognition system comprising video cameras and electrical controllers; computer hardware, software and firmware for networking and interfacing all aforementioned readers and writers and host computers used in the fields of security and access control; encoded hands-free electronic key fobs and keycards utilizing dual-frequency operation; controllers and electronic interfaces to operate readers used in hands-free access control systems; local area network hardware and software apparatus for use in access control systems; computer network and wireless network adapters, bridges, hubs, routers and switches; electric data cable and electrical connectors to facilitate the installation of all aforementioned equipment; electric and electronic keypads and RFID reader and writer modules for original equipment manufacturers (OEMs); external door-entry panels incorporating audio, video and access control utilities; internal audio and video user panels for use with door entry panels; liquid crystal displays for use in access control and building security equipment; exit and entry buttons used with access control systems; demonstration and display equipment for use with all the aforementioned goods, namely, flat panel display screens