Installing the tracking device requires a warrant, meaning it's classified as a "search," not as testimony. It's 4th Amendment territory, not 5th Amendment. If

Installing the tracking device requires a warrant, meaning it's classified as a "search," not as testimony. It's 4th Amendment territory, not 5th Amendment. If removing the tracking device is pleading the 5th, then putting the tracking device on at all would be a violation of the 5th Amendment. You can philosophize a testimonial aspect into almost anything, but the courts take a more narrow view of what gets protected by the 5th.