Upgrade your photo ID card security with Mifare Plus NXP 2K S cards. These cards offer enhanced data integrity for secure access control, and their fixed memory structure is compatible with Mifare Classic 1K and 4K cards for easy upgrading.Sold in packs of 100, these cards have a 7-byte UID and operate at a frequency of 13.56MHz.Improved data integrity for secure access controlCompatible with Mifare Classic 1K and 4K cards for easy upgradingSold in packs of 100 with a 7-byte UID and 13.56MHz frequency