This permits them to talk to card readers by very simple proximity, with no need for dipping or swiping. Some check with them as “good playing cards” or “tap to pay” transactions. There are, needless to say, versions on this. One example is, some criminals will connect skimmers to ATMs, https://zandermzkwf.verybigblog.com/33042636/the-carte-clonées-diaries