New applications are being created that allow people to pay for things using a mobile device like a smart phone. For instance, at some hotels, guests can use smartphones for check-ins and room keys. Passengers can pay for fares by waving a smartphone across a terminal as they board a bus. These payments apps make use of ______________________ technologies.
A) GPS technology
B) Location based apps
C) Geo-location technology
D) Near-field communications

Question

Quizplus · Accepted Answer

The scenario described in the question involves the use of mobile devices for payments through waving smartphones across terminals. This is made possible through near-field communications (NFC) technology, which allows for data exchange between devices that are in close proximity to one another. GPS and location-based apps are not relevant to this scenario, while geo-location technology might be used in combination with NFC to provide additional context and security in the payment process, but it is not the primary technology being utilized.

New Applications Are Being Created That Allow People to Pay