For households wanting truly keyless entry plus a built-in camera, the eufy FamiLock S3 Max is a 3-in-1 smart lock that unlocks via palm vein recognition in 0.1 seconds. It pairs a 2K HDR doorbell camera with a 150-degree view, a Wi-Fi keypad deadbolt, 16GB local storage, and a rechargeable battery lasting up to six months.