A large department store is deploying a new method of payment that allows a shopper to make a payment by placing a smartphone on a sensing device. Which service must be enabled on smartphones to support this technology?

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Question:
A large department store is deploying a new method of payment that allows a shopper to make a payment by placing a smartphone on a sensing device. Which service must be enabled on smartphones to support this technology?

IR
NFC
Wi-Fi
Bluetooth

Explanation: Near Field Communication (NFC) enables mobile devices to establish radio communications with other devices by placing the devices close together or by touching them together.

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