Which technology offers centimetre-level indoor ranging for digital car keys?

  1. GSM
  2. Wi-Fi 4
  3. NFC
  4. UWB (Ultra-Wideband)
Answer

D) UWB (Ultra-Wideband)

UWB measures precise time-of-flight distances.

Computer Science MCQ · More Mobility, Wireless Communication and Location-Aware Applications MCQs · Practise