Posting in the Norway section because of where it happened, but could apply anywhere. Mind you, all caused by my carelessness. Anyway, here's the story. I was in Oslo and decided to visit the MUNCH, Astrup Fearnley, and the National Museum in one day. All went well until I was ready to leave the last on my list, the National Museum. I carry a camera bag with my gear and my passport with me everywhere I go. Usually, I take my camera and one lens and lock up the rest in the cloakrooms. No problem, I am used to it. I read and follow the instructions and routinely take a photo of the locker. So, a couple of hours later, tired but happy, I approach the wall of lockers, pull out my phone, and horror! I forgot to take the photo this time! I was left staring at hundreds of identical shapes with no idea which one had my possessions. After randomly trying a few doors, I approached the nearest guard with my dilemma. He contacted security, they looked at CC TV footage, and after a couple of false attempts, I had my precious things. Moral of the story: don't forget to take that photo, and this is one time I am glad I had been recorded. All hail (working) surveillance camera and lovely museum guards!
How fortunate you were! Thanks for the reminder.
Similar thing happened to me but in Japan. I had placed my day bag in the lockers at Himeji station (I was going back to Kyoto from Hiroshima). After exploring for few hours and returning to the station, I could not for the life of me find the locker section (there were a few). After walking in circles, I went to a security officer who took me to the information office. Luckily, the system included a key which had a number on it. Officer looked at the map/system and walked me to the locker. I had passed by it and forgot to make a turn. Phew. Got my things just in time for my train to Kyoto.
We just write down the number. Keep it in the phone.