The Salto 1K Contactless Smartcards with Hi-Co Magnetic Stripe are a secure option for contactless capabilities that work with Mifare card systems. They are perfect for businesses looking to upgrade their current security system since the cards offer versatile access control capabilities. Product Features:Sold in packs of 100Standard CR80 credit card size (85.60 x 53.98mm)1KB memory capacityOperates at 13.56 MHz frequency rangeSALTO Virtual Network (SVN) compatible