4th Amendment
1967

Katz v. United States

389 U.S. 347 (1967)

The Supreme Court ruling that anchors one of the POP phrases. Plain-English summary below, with the precise phrase to invoke and when to use it.

Phrase to invoke
"I am recording this interaction for my records."

When to use this phrase Timing

When you decide to record the stop and want the legal basis for that recording on the record. State it once, keep recording, and do not interfere with the officer.

The ruling in plain English

The Supreme Court held that the Fourth Amendment protects people, not places, and established the reasonable-expectation-of-privacy test. Activities in public — including police activity you can see and hear — are not private. The ruling is the foundation for the right to record police during a traffic stop.

Katz v. United States, 389 U.S. 347 (1967)

Use This Phrase During Your Stop

Open Stop Mode on your phone — pinned phrase, recording timer, and live legal context.

Open Stop Mode