In the past, businesses could accept cash, or had to install a specialized payment terminal to receive credit card payments. Today, there are many more options.
Alaska Airlines is expanding tap to pay for most devices, including Apple's iPhone. There are many services now that use Tap to Pay via NFC (near-field communication), and Alaska Airlines has recently announced that it is adopting it to use on flights for an easier experience.
Apple is facing a class-action lawsuit for its tap-to-pay functions on the iPhone. There is a class-action lawsuit that the iPhone's tap-to-pay feature is facing now, and the Affinity Credit Union is now proposing this case against Apple for its alleged monopolistic tactics on its payment systems.
iPhones might be getting an awesome update later this year. This is a feature that lets users accept payments directly to their smartphones without extra hardware. Note that wireless tap-to-pay systems might be critical for contactless payments.