Ntag215 Rewritable NFC Stickers 25mm Round White Key Tags Compatible with All NFC Enabled Devices Anti-counterfeiting

This is an ultra-thin PET NFC tag withNTAG213 chip, just 0.15mm thick. Offers 144 bytes memory, 100,000+ write cycles, and 10+ years data retention. Waterproof, scratch-resistant, with strong adhesive backing. Compatible with iPhone 7+ and most Android NFC phones. Tap to read, write via app. Ideal for digital business cards, greeting cards, badges, pet tags, music triggers, and more.Primary Warning⚠️ This product is NOT an access card and CANNOT replace access control cards.Most building access systems use MIFARE Classic, MIFARE DESFire, or CPU encrypted chips with proprietary encryption and mutual authentication protocols. NTAG series chips are open-standard NFC tags with basic password protection only — they do not support the encrypted protocols required by access control systems. These chips are fundamentally different in design, encryption, and reader compatibility.Do NOT use this product for: Building access, elevator entry, hotel door locks, public transit passes, financial payments, or any encrypted authentication system.