Wired Security Spoken Edition

The tiny, portable credit card readers you use to pay at farmer's markets, bake sales, and smoothie shops are convenient for consumers and merchants alike. But while more and more transactions are passing through them, devices from four of the leading companies in the space—Square, SumUp, iZettle, and PayPal—turn out to have a variety of concerning security flaws. Learn about your ad choices: dovetail.prx.org/ad-choices