Self Service Tills

I know this might sound like a well-boring subject but I'm still annoyed nearly a day later.

They should put a sign up that says only use if you have a basket and you are not stupid!! Nuff said! I was gone so long that C nearly came looking for me. What should've taken 2 minutes took nearly 20. People, don't put your weekly shop through what is basically a giant scale and when she leant on it and it said "unidentified item in bagging area" it was all I could do not to fall about laughing!