Transition Series multi-technology access readers feature simultaneous compatibility with multi-vendor credential technologies--UTC and HID 125 kHz Proximity, HID Corporate 1000 Proximity, 13.56 MHz contactless smart card technologies for MIFARE Card Serial Number (ISO 14443A), MIFARE/DESFire Card Serial Number, and Vicinity Card Serial Number (ISO 15693), including HID iCLASS Card Serial Number--all in one reader. With this remarkable technology combination, security administrators can now deploy the Transition readers into existing or new facilities or systems--continuing to serve existing card-carrying users while migrating to the latest in security and smart-card technology advancements.