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In restaurants, We need a new way to signal that we're ready to pay

<p>Phones have displaced paper money and credit cards as the preferred way to pay for for a bill at the end of a meal. The trouble is, how does the waitor now know when you're ready to pay?</p>

Phones have displaced paper money and credit cards as the preferred way to pay for a bill at the end of a meal. The waiter asks if you want dessert, but you decline... and feeling somewhat guilty you hurriedly justify this rebuke by explaining how you over-ordered one too many sides, are ready to burst, and couldn't possibly have room for sticky toffee pudding, but honestly, the food was delicious. For generations, the accepted signal was a banknote, and then a credit card, poking out of that said rectangular black wallet.

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