Working the register at Dollop Coffee Co. in the Loop one recent evening, Evelyn Rangel rang up a $4.39 almond croissant and stood by as her customer, having swiped her credit card, studied the tip screen that popped up.
Did the service merit a $1 tip? $2? $3? Those were the options prominently displayed across the top of the Square payment touch screen. Below there were additional buttons that gave the option of leaving a custom tip or “no tip” at all before signing to complete the purchase.