Near-field Communications facilitates contactless payments.
Correct Answer:
Verified
Q3: Ultra-wideband is useful in zero visibility environments.
Q3: Mobile wallets enable users to make purchases
Q4: Short message service allows users to send
Q6: Wi-Fi hotspots are two-dimensional.
Q9: Radio transmissions are highly secure.
Q12: Wireless computing does not really affect productivity.
Q13: The higher the orbit of a satellite,
Q14: A hotspot is a small geographical perimeter
Q16: Personalization means that a mobile device can
Q18: Microwave transmissions are affected by environmental conditions
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