The Gogi smart lock greets you by name at the door, via.
The classic lock-and-key combo that most of us still use today has been around for 4,000 years—longer than the steamboat, the telegraph, or electricity, for some perspective. While it's been refined over the years, the principle hasn’t changed: insert uniquely-cut metal key into matching lock, turn and enter. But, the mechanical key may be finally nearing the end of its reign.
While mechanical locks could always be picked, now even the most high-security model keys—the ones you can’t copy at the local hardware store—can also be scanned, deciphered, and 3D-printed into a working replica.For the rest of the story: http://motherboard.vice.com/blog/why-are-we-still-using-keys