Secure opening
Direct4.me is using an OTP (One-Time-Password or One-Time-Key) generator in the backend, which is synchronized with the smart lock in our D-Spaces.
When any user requests a key to open D-Space, a One-Time-key is generated in the backend, encrypted, and prepared to be sent via a selected proximity channel (Data Over Voice, NFC, Bluetooth). On the side of D-Space, the key is decrypted and verified. In case key matches, D-Space will open.