At some hotels, guests can use smartphones for check-ins and room keys. In some cities, public transit passengers can pay for fares by waving a smartphone across a terminal as they board a bus. These payments apps make use of GPS Global Positioning System) technology.

Question

Quizplus · Accepted Answer

These payment apps typically use NFC (Near Field Communication) technology, not GPS, to facilitate contactless payments and interactions.

At Some Hotels, Guests Can Use Smartphones for Check-Ins and Room