Proximity Products - Proximity provides the highest level of convenience and ease-of-use available in access control technology, and is now the most utilized technology in new access control installations. Proximity cards and key-fobs need only be placed within proximity of their readers to activate the system. The technology is cost-effective and it is unaffected by dirty environments, weather conditions or strong magnetic fields.Because not everyone needs smart cards. Keyscan's 36 Bit HID proximity readers and cards will continue to be the industry-leading solution. With a variety of readers and cards it is easier to upgrade to proximity and provides an alternate form of credential. Your investment in proximity is safe with Keyscan & HID.