GoKawiilRing unveils smart lock with hand-crank backup power
Ring, Amazon's video doorbell company, has launched its first smart lock, featuring a manual power dial that lets users crank the device back to life if its battery dies. Founder Jamie Siminoff said he developed the feature after worrying about getting locked out of a rarely used vacation home due to a dead battery. The lock also supports entry via fingerprint reader, touchscreen keypad, the Ring app, or Alexa, and its battery is expected to last about a year.