All Specs There are plenty of smart locks out there that let you lock and unlock your door using a mobile app or your voice, but very few offer fingerprint recognition as an additional option. The $249 Kwikset Halo Touch is one of the few; it supports Alexa and Google voice commands, has built-in Wi-Fi and a mobile app, and is equipped with a fingerprint scanner that lets you unlock your door quickly with one touch. It’s a sleek-looking lock that's easy to install and offers quiet operation, but it lacks the third-party integrations that you get with our Editors’ Choice winner, the identically priced August Wi-Fi Smart Lock.