Not necessarily. In my case I will often buy a few bunches of bananas, which don't all fit on the scanner’s scale at once. If I try to weigh them once bunch at a time, I will get a “too many scans of this item” alert and a staff member will have to come unlock the machine for me (and they'll usually scold me for not weighing all of my bananas, which can't all fit on the scale, at once).