Was a Wiretap Warrant Required for Officer Morris to Wear

Was a wiretap warrant required for Officer Morris to wear the voice transmitter

A) Yes, a warrant is required if officers want to use electronic devices without notifying all parties that that their conversation is being monitored.
B) Yes, a warrant is required whenever officers use electronic surveillance devices.
C) No, a warrant is not required when the Misplaced Reliance Doctrine applies.
D) No, warrants are required to record telephone conversations but not face-to-face conversations.