Our Mifare Classic� 1K NXP EV1 50mm square stickers are a popular choice for adding smart technology to existing ID cards, mobile phones, and wallets.Sold in packs of 100, these stickers have a no-battery design that allows for unlimited reads. They are also compatible with both new and existing MIFARE� applications.Features:50mm square sizeMifare Classic� 1K NXP EV1 technologyNo-battery design for unlimited reads