I'm not sure if the same can be done to tags, but considering the size of the tiny electronics, and the fact that they are manufactured under the assumption they'll never need to be touched (aka, no CMOS spike tolerance), it might be trivially...
...wait. I just remembered about RFID alarm barriers in retail stores.
Well this is annoyingly difficult to discuss, then...
Why? Is there a law against public discussion about how to disable an anti-theft device or something?
Though I concur, might be used for evil purposes, couldn't resist posting this. I just love disposable cameras hacks.
[1]:https://events.ccc.de/congress/2005/static/r/f/i/RFID-Zapper...
"Wore these heels to six bars, didn't get hit on once. Please repair or refund."