Why are credits cards taking so long to modernize?

A swipe of the credit card and a quickly scribbled signature is a familiar gesture for many American shoppers. But Mastercard recently announced that it will phase out magnetic stripes by 2033 in favor of chips and touchless taps. Though other countries have more quickly adopted credit card technology, in the United States, back-end processing, cost and consumer muscle memory have stood in the way of progress. Plus: indicators of a summer slowdown in economic recovery, the delta variant hits Hawaii’s tourism industry and a local food delivery service competes with food delivery giants.