1.Premium NTAG216 chip developed by NXP Semiconductors, with 888 bytes large memory capacity, Password verification protection, ultrathin, fast read/write/lock, high ScanStrength, 25mm Clear Film Face Stickers. | 2.Our ultra-thin round sticker is sticky and can be bent and pasted. | 3.Designed to work with all NFC devices or NFC compliant proximity coupling devices including all other NFC-enabled smart phones and tablets, access control devices, etc. | 4.Can be used for smart advertisement, goods and device authentication, call request, SMS, call to action, voucher and coupons, blueteeth or WiFi pairing , connection handover, product authentication, mobile companion tags, electronic shelf labels and business cards, etc. | 5.Package including: 20 PCS NTAG216 stickers.