Love the newish square payment flow where you're handed a receipt with a QR code that directly takes you to a payment page. use apple pay and you're out in 20 s

Love the newish square payment flow where you're handed a receipt with a QR code that directly takes you to a payment page. use apple pay and you're out in 20 seconds! No idea how they know if you're dine and ditching though. Saw several places with this in NYC in march. Have only seen it at El Techo and Freekeh in SF.