TDSI proximity cards provide a secure yet cost-effective card solution for access control. All cards within our range are ISO standard and PVC laminated with a gloss finish that adds durability and resistant to snapping. A popular choice is our blank white 4262-0245 cards, which are available in a pack of 100. These cards can also be personalised to any form of branding and operate at 13.56 MHz frequency. Please note that all TDSI cards are standard CR80 (credit card size).