Yet surely these are configurable? I've had numerous instances in Europe, particularly in Ireland and the UK, of shops, grocers, cafes, etc with touchscreen PO

Yet surely these are configurable? I've had numerous instances in Europe, particularly in Ireland and the UK, of shops, grocers, cafes, etc with touchscreen POS devices that ask customers for a tip percentage with every sale, only for the staff to quickly reach over on every sale and press "no tip". It seems like a rather inefficient way of not having tips. I don't know, however, whether it comes from owners trying to establish tipping and staff disagreeing, or an inability, administratively or technically, to figure out the configuration.