In 2020, you’re going to want to use your phone to pay for everything. Credit cards? They’re so a decade ago. Why bother with a wallet, really, when you can just take your phone everywhere and do everything with it?
You’ll use your phone to pay for that Vanilla Coke you found so tempting in the work vending machine. On Saturday, you’ll be able to use your phone — and that’s just your phone — to pay for your artisanal pumpkin bread at the local farmer’s market. And on Sunday, when you’re fancy dress shopping, you’ll take your phone to Nordstrom and use it there too.
The limit (to the situations in which you’ll be able to pay with your phone) does not exist.