DH helped a lady who was clearly struggling to cope with the automated luggage check in at Gatwick, and checked her case through for her. Unfortunately he did so just after we’d put my bag through, and before he did his own. The system obviously picked up that there were two of us on our online booking, and even though he used her boarding card, her case went through with all his details attached.
We realised this only when his boarding card then wouldn’t work and we’d to check his case in under her details, using her boarding card again. I’m sure this could have caused problems - if one of the cases had gone astray, say (or if she’d had something dubious in her case that was picked up in the scan!). Not an employee in sight to help, and we weren’t the only ones having difficulties.