Your phone is the key to unlock door locks, garage locks, lockers, etc. And you can share keys on the internet.
You can install PHONEKEY on iOS (iPhone 4s+) and Android 5.0+ smartphone systems.
PHONEKEY requires the mobile phone with Bluetooth 4.0 or higher version in order to communicate with the device (lock).
When resetting the device password with the guanarantee card, PHONEKEY need to use mobile phone with NFC (Near Field Communication) to read the guarantee card.