While using a smart lock has a lot of positives, one of the negatives is having to deal with a battery that has unexpectedly gone dead. Lockin is introducing a smart lock that bypasses that problem: the V7 Max, which is powered by wireless optical charging. According to the company, the lock uses "eye-safe optical output to provide rapid power delivery with zero waste within a four-meter range."

This is how it works, according to Lockin: The smart lock's lithium battery is wirelessly charged by a transmitter, call an AuraCharge, which is plugged into an outlet and installed inside the house within 4 meters of the lock (you can mount the Aur …

Read the full story at The Verge.