“The company owns Square, whose Square Register system powers iPad checkout screens at restaurants and cafes that prompt customers to tip.”
...and beyond usually not even bothering to offer a 15% tip anymore (more like 18%, 20%, or 25%), the damn things calculate the tip only AFTER including the sales tax on the meal. Fortunately, due to not attending public schools, I can figure out the tip in my head by taking the highest number offered and dividing it by 2, which gets me close enough to 15%, before taxes.
I always tip in cash, never as part of the credit card payment. And that’s only for actual table service, where the waiter comes and takes my order and then brings the food. Decent service gets 20% pre-tax.