I tested Apple’s hands-free Home Key — and it’s a big upgrade

The U400 ($269.99) is the first to support Apple’s Home Key’s hands-free unlocking. This uses the U1 ultra-wideband (UWB) ...

Aqara’s U400 smart lock boasts hands-free unlocking

The Aqara U400 combines Apple Home Keys with an Ultra-wideband radio to unlock your door as you approach with your smart ...