From Sweden, Stockholm, can say a solid NO. my coworker lost his backpack (wallet, iPad and Mac) in the university computer room (card key required to get in) by just leaving it for 5min under summer HPC course. When we managed to track the mac down (through cloud & GPS) it was 40km away, moving in a car.
You can usually ask someone to keep an eye out while you go to the restroom/refill coffee and most people are happy to help, but you need your due diligence
You can usually ask someone to keep an eye out while you go to the restroom/refill coffee and most people are happy to help, but you need your due diligence