For thousands of years, if you wanted to send a secret message, there was basically one way to do it. You’d scramble the message using a special rule, known only to you and your intended audience.

Posts from this topic will be added to your daily email digest and your homepage feed. The Aqara U200 is a retrofit door lock with a separate keypad and a fingerprint reader. It may also be the first ...

I’ve always wondered: Are keys really truly unique? Eventually, somewhere, my house key has to work on another house, right? Your key will probably work on another home — and another person’s key ...

Learn how facial‑recognition smart locks 2026 use 3D face unlock door lock systems, anti‑spoofing facial recognition security, liveness detection, and biometric smart lock encrypted access logs to ...