But as cashiers and Starbucks baristas are discovering, they can still hit you up for a generous tip with devices like DipJar. Those are card readers that can be placed onto a tip jar or, as it turns out, Salvation Army red kettles.
You just swipe your card through it. The DipJars can be pre-set to accept a specific amount of money each time a card is swiped through, like a dollar.
Right now, DipJar is being used by the Salvation Army in Colorado and California. But, if it's successful, you may just see Salvation Army's bell ringers swiping your card, rather than asking for change.
That's great, as it'll likely result in more donations. The downside? You can't really walk away with a simple excuse anymore. "Sorry, I don't have a card or Apple Pay, or change."