This smart lock never runs out of battery — because I shoot it with lasers

Wi-Charge’s AirCord technology uses infrared lasers to beam power from its R1 wireless power transmitters to a receiver within line of sight.

The company has Class 1 FDA approval for a laser product, which means it should be as safe to use as a DVD player.

The standard transmitter, which I tested with the door lock, can deliver 100mW to devices within 10mW.

DB2S has a touchscreen keypad, a keyway for unlocking, and the option of two RFID keyfobs.

It works over Bluetooth and Wi-Fi (with a separate $ 60 bridge) to connect to Alfred ’s app for managing keycodes and controlling the lock.

An optional Z-Wave module allows it to connect with Ring Alarm and other platforms such as Samsung SmartThings .

Overall, it's a solid, albeit expensive, smart lock, but it's the Wi-Charge integration makes it noteworthy.

Wi-Charge's power management algorithms optimize the charging cycles, so it’s not constantly pulsing electricity; instead, it sends power only when needed.

It still feels like the dream of whole-home wireless power may be stymied by infrastructure.

The good news is that the transmitters are flexible, installation-wise. Along with the ceiling light option, you can also wall-mount it, install one in track lighting.