21. Smart door lock with one-touch
Locks and protection devices in modern Japanese homes are probably some of the safest systems you could get. In various home reviews on social media, we can see that people can lock and open their house with just one button. If you want to compare, think of its as a car lock button that we have in the west. Moreover, in case they ran out of battery, there is also a metal keyhole under the button to open the door.
