Smart locks with a lever handle that replace the standard lock on wooden and steel doors, a common choice for apartment and villa entrances, letting you open by fingerprint or phone instead of carrying a key. Options include the EZVIZ L2S and DL05, ZKTeco TL700 and ML100 fingerprint locks, and SE series locks in Wi-Fi and Bluetooth versions.

Tip: measure your door's thickness and note which way it opens before you order.