Heard of it, knew it and experimented on it some time ago. It wasn't funny when I was trying to change them though lol.
I think one of the first few "pioneers" was with the Dutch notes for the Europeans and that was where the whole idea was raised in tracking notes. The US had a different idea where only 100 dollar bills was planned only for such tracking and the idea was that if there was enough metallic threads appearing under an x-ray in major places, then that will raise an alarm.
Seriously, the whole plan is ridiciously silly. You can remove the RFID tags but depending on the degree on of the burn, it's not really "useable" is it?
Plus the idea of putting them into aluminum foil is completely useless. If I had to add in a rude shock that I had in a Turkish shopping mall, they actually had a full airport security from X-ray scanners, to body check!!!
Forget alumnium foils, having something metallic might be mistaken as a bomb and you will be branded as a terrorist the next second.

Totalism is here to stay

Looks like it's time to use real gold coins for daily transactions... I'm sure RFID tags aren't on bullion coins yet...