I am both Sherlock and Watson! I literally sat and stared at this image for a few seconds and deduced that the passcode was 0179 although the door was already open due to the green light.---just Sherlock
Someone from Colnbrook, England, GB posted a whisper, which reads "I bet you 159588837 that you didn't read the number completely. And I bet you you didn't noticed it had a letter in it. You went to check it and I was messing with you, I want my like"