Question $17$

$0\mathrm{.}75pts$

You require an loT system that has the following properties: $-$ A user should be able to use their cellphone as a means of identification to enter a secure military facility, in conjunction with a biometric scan $-$ The cellphone signal should have the lowest possible chance of being read by anyone standing close, for security reasons. Which loT sensor technology is most appropriate?

$$ Bluetooth

Passive sensing technologies

RFID

WSN

NEC