Comment by uxp

A mostly unrelated and offtopic comment: It's been a misconception that the $20 and $100 U.S. Dollar bills contain some RFID-like passive tracking capability embedded within the "ribbon" security feature. If you want to have an expensive and uneventful couple minutes, put a $20 in a microwave for a few seconds to "disable" the chip, but be sure to have a cup of water around. The foil-beanie wearing crowd claims that the result of the microwaving, which burns Jackson's face, is proof. Nevermind the actual fact that a majority of the ink on the front of the bill is on Jackson's face, and that the ink contains metal used for pigmenting and other proprietary security measures which is likely the reason it smolders or catches fire first.

Anyways, the reason I bring this up is to highlight the paranoia of some that think that long-range RFID scanners can actually locate large stacks of highly valuable "untraceable" currency, which might be used by the highway patrol to identify potential targets to pull over for civil asset forfeiture reasons.

https://www.snopes.com/fact-check/cache-point/