Pen registers and trap-and-trace devices are not considered forms of searches and do not need probable cause and a court order because subscribers waive their rights to privacy when using devices such as cell phones or telephones.

a. true
b. false

Option(b) i.e false is the correct answer to the given question .

Explanation:

The pen register is type of recorder that's main objective to collecting the any numbers from a given phone line also the pen register monitoring the external signals to its target from the particular cell phone or telephone line The pen register providing the list of contact number that information do not providing any confidential information communicated via the signals.

So the given statement is false .