We have both those facilities here in Ireland in Tesco its U Scan in Superquinn its Scan and go and in Dunnes Stores its U scan I love them all and use them whenever possible. If I have things like apples, pastries etc which would not have bar codes on them each store has an alphabet on the UScan and I just use that - so I love them for that too so simple.

Saves time but everyone is now using them and its getting harder to get in and out of these places without them clogging up the lines...