Honeywell's OmniClass credentials are designed to work with the OmniClass readers. The OmniClass product line, built on 13.56MHz technology, is RFID based and provides excellent contactless sensing range (up to 4.5"). The OmniClass cards are laminated PVC cards that can be printed on both sides using a dye-sublimation or thermal transfer card printer. They can also be slot-punched on the short side for vertical orientation (portrait).