Microlatch's metallic keyfobs offer a robust user token incorporating a patented cypher wiegand field within the Rolling Code RF Wireless Communication. In addition Microlatch keyfobs can optionally contain a dual authentication chip or IC, such as Mifare, EM, HID Prox and iClass technologies, offering full compatibility with existing access control systems. The result is a versatile and multi-purpose user token containing between 1 to 4 push-buttons.