Jonathan Bean, Melanie Wallendorf
What's a reasonable tip for a $3 latte? 10 percent? 15 percent? 18 percent? Or should it be a flat figure, say, $1? If you're feeling magnanimous, even $3? Touchscreen devices running payment technologies such as Square have become ubiquitous in independent cafes. The interaction is swift and slick. The employee spins around an iPad mounted on a shiny white stand; the customer taps a few times to confirm the transaction amount and add a tip. Tipping amounts can be listed as either percentages or in increments of currency. Adding a gratuity is as simple as touching a button;…
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