Probably wouldn't work in the dark recesses of the SFO baggage claim area, where United stashed by bag in a cage a few years ago, after:
1) Mixing my SMF bag tag up with another woman at BDL checkin, realizing it only when they went to put my tag on her bag, which was already gone.
2) Assuring me they were calling down and it would be fixed before being loaded.
3) Insisting for a *week* that they had no idea where the bag was, and that they were sending messages to the SFO station when I told them that was probably where it was.
Ended up going to SFO myself, spotting the bag in a cage myself, and cutting in the baggage office line to make them unlock it. Fortunately I'd seen the other woman's destination and my GF lived in SF, or the bag might still be sitting in it's cage...