With everyone carrying less cash and increasingly depending on credit cards and digital wallets, demand is growing for tech-savvy tools to make tipping easier. With a few quick swipes on a smartphone, ...

In theory, tipping should be simple. If you receive excellent service, it's easy to reach into your wallet and offer a tip. But in recent years, as people carry less cash and increasingly depend on ...

With everyone carrying less cash and increasingly depending on credit cards and digital wallets, demand is growing for tech-savvy tools to make tipping easier. With a few quick swipes on a smartphone, ...