Doors with 'voicemail' and that open by themselves: 'low cost' technology to prevent theft at home. Connected locks – known as smart locks – facilitate intelligent use.

Being a connected device can connect to smart bags or smart lighting. Another principle is to turn on the lights remotely (or randomly), simulating the house that is occupied. The most valued smart locks are Nuki Smart Lock, Yale Smart Lock and Linus Smart Lock in Yale, Yale and Nuki.