Apparently they do this.
You can visit a stand at one of these baby shows and have "your baby's first heartbeats recorded in a teddy to take home forever".
Poster on another forum was surprised that they scanned her as well as using a Doppler, and discovered sadly that she was having a MMC.
Clearly wherever you discover that something is wrong with a pregnancy, it's going to be distressing and traumatic. But AIBU to think that scanning women at shows like this is bloody irresponsible? It just seems wrong, wrong, wrong to me.
Sorry for crap link (you'll have to scroll half way down a long page to find the ad) but anyway, some evidence that I've not dreamed this teddy heartbeat thing up (I was pretty incredulous myself tbh): Baby Show
BTW please don't be harsh on the woman for choosing to visit the stand - I know this is AIBU but this is my AIBU and not hers, iyswim. It would be awful if she stumbled across this thread and I'd put her in the line of fire.