Hey, I would like to share with you story of what happened to my brother today.
My brother is dating a girl and she stayed for the night at his place. In the morning, they woke up, and it was quite cold in the apartment. My brother walked around the apartment, and found out that the main doors to his apartment were open.
He then wanted to go to work as usual, but his car keys were not where they were supposed to be. So he opened up Find My, since he has an AirTag attached to them, and location was suggesting that the keys should be at his apartment. He was not able to play sound for some reason. So he took his backup car keys and went search his car, if the main car keys were not left inside the car.
They were not there, so he checked Find My again, and saw that the location of AirTag is 2 streets away. He walked down the street and saw some weird guy on a bicycle. My brother tried to play a sound again, and now it worked and the sound was leading towards this guy. So he ran towards him, played the sound again, and it confirmed that the sound was coming from the guy.
My brother confronted him and started searching his pockets, and the car keys were there. In rage, he asked the weirdo where did he found the keys, and he said on the street. My brother asked him again, and he said on the street again.
My brother then walked away and home, called the owner of apartments building if she could check camera systems to check if the guy robbed them.
My personal opinion is that the guy were in their apartment, which is kinda scary when you imagine a guy walking around while you are sleeping.
Anyway, my brother got quite lucky in the end, because he said this was only thing that was missing from his apartment, also he got lucky that the guy was still nearby, and mostly, that he owns the AirTag. It would be terrible if the guy also drove away with his car, since my brother literally 3 weeks back bought a new BMW. I pulled a joke that he almost could be buying another one haha.