Question

Which technology is predominately used for contactless payment systems?

a. wireless local area network (WLAN)

b. Bluetooth

c. near field communication (NFC)

d. Temporal Key Integrity Protocol (TKIP)

Answer 1

The correct answer for this question is this one: "a. wireless local area network (WLAN)."

The technology that is predominately used for contactless payment systems is called the wireless local area network (WLAN). It is even used now a days.
Hope this helps answer your question and have a nice day ahead.