WEST916.RA Unlocking the entrance door by not carrying the key

"Unlocking the entrance door by non-carrying a key"

It was a police case. The work was completed while the police officer was interviewing the client. The police officer was also surprised with the voice of surprise from the client.

The reason why the police were surprised was that it took more than 3 hours in the case they witnessed the other day. He called a helper from Tokyo and completed the work in 4 hours.

It seems that the reason why it took time was the automatic locking type smart lock. What was the smart lock like that took 3 hours? I'm curious.