The Salto PSM04K-100 4K Mifare white round stickers offer access control capabilities to a variety of objects such as phone cases, wallets, and cards. These RFID circular stickers are designed to read up to 10cm and have a no-battery design, allowing for an infinite number of reads. Sold in packs of 100, these stickers are self-adhesive and waterproof, and operate at a frequency of 13.56MHz.Enables access control for various objectsRead range of up to 10cmNo-battery design for infinite reads