[longtermmemmory]

Ok so if I pop it in the microwave will it defeat the transmitter? How does one electronically sterilize the offending garments? Will the materials be included in shaving cream itself? Are the manufacturers obligated to disclose the use of the devices?

Would a tinfoil lined shopping bag defeat security tracking?

[L,TOWM]

Magnets. Really Big Magnets...

[JSteff]

"Are the manufacturers obligated to disclose the use of the devices?"

You know that is actually a good question and a way to challenge these things legally. Remember the new privacy act? That might just be the weak spot of the whole thing legally.

[Smedley]

Ok so if I pop it in the microwave will it defeat the transmitter?

There are some RFID devices that are designed to "blow" when overloaded with a microwave source so as to disable them after a purchase. However, I wouldn't count on it destroying all the RFID variants.

How does one electronically sterilize the offending garments?

If it were me, I'd find the RFID's chip and/or antenna and break either or both. Most of these antennae are foil devces having a spiral-like look to them. While it is possible to print an antenna using conductive ink, printed antennae are likely to dissolve with repeated washings.

Will the materials be included in shaving cream itself?

No, nor will RFID devices be in any can. I'd guess that they're slated for the packaging or adhered to the outside of a product.

Are the manufacturers obligated to disclose the use of the devices?

No.

Would a tinfoil lined shopping bag defeat security tracking?

Any metal container is likely to thwart an RFID device as long as it adequately blocks radio waves or magnetic fields (depending on the particular RFID technology).

[algol]

Would a tinfoil lined shopping bag defeat security tracking?

Probably, but it could also get you arrested for possession of a device designed to defeat anti-shoplifting tags. And yes, such laws do exist -- as do shoplifters with foil-lined bags and coats.