ID TECH makes and markets a wide variety of payment devices, almost all of which, nowadays, are compatible with “chip cards” (or “smart cards”). Payments made with a chip card are generically referred to as “contact EMV,” or sometimes just “EMV.” (EMV, of course, stands for Europay, MasterCard, and Visa; the card-brand consortium.) In industry terms, an EMV transaction is one that conforms to the requirements of the four-volume EMV Integrated Circuit Card Specifications for Payment Systems (available from https://www.emvco.com/). Wrapping your head around this spec takes time. At four volumes, it’s a pretty extensive specification. ID TECH tries to make “EMV compatibility” an easy-to-reach goal for developers, however, by offering a variety of free tools, SDKs, demos, and other resources designed to accelerate time-to-market for POS integrators and others who need...