I forgot my PIN number to a home delivery box. What should I do?

Answer to this inquiry

Please insert a pin in the holes located behind a dial lock, and dial the number on the same row as the inserted pin. Dials get stuck at a set PIN number.

How to confirm your PIN number

Remove the cover behind the dial lock from the inside. Loose the two screws and remove the cover.
Please find a search bar.

※In some apartments, a search bar can be removed from a cover.
※Something keen can be used as an alternative.
Please insert a search bar in the holes to find a PIN number.
While inserting a search bar, please dial the number in front. Then, dials get stuck at a set PIN number.
Please repeat the process described at the number 4, for all 4 holes.