Quick NFC Card Unlocking: Unlock the eufy Smart Lever Lock C33 quickly and effortlessly with an NFC card. The eufy Smart Lever Lock C33 is compatible with Alexa and Google for seamless integration. Individual Access: Each NFC card pairs with a single eufy Smart Lever Lock C33, providing personalized access control. Advanced Security: The built-in ES128 financial-grade chip in the eufy NFC card securely stores key information, offering advanced protection against unauthorized replication. User-Friendly Operation: Easily program the eufy NFC card for family, friends, and employees with sensitive induction and a simple setup. This feature is especially convenient for the elderly and children. Children's fingerprints are shallow, while elderly people's fingerprints may be worn. The NFC card enhances the smart door lock experience with quick and easy unlocking, eliminating complicated operations. Small & Lightweight: The size of NFC card is 40mm*25mm*3.3mm, and the weight is 17g. It's easy to carry and put in bags or pockets., Manufacturer: Anker