Not arguing that there are privacy issues, however there are much greater things to be concerned about. Ubiquitous GPS, software that phones home (Microsoft XP etc.) preventing you using your property in the way you want. Some years ago I wrote an article about a rap on the knuckles Mattel got for providing software with toys that phoned home and requested details from the user, almost always children. Now as adults we can weigh these decisions as to how much privacy we choose to give up for convenience, but when they start targetting children I get offended.

At present the limit on RFID range is physics. The small passive device can only be activated by sending power from a reader. To read from a greater distance needs logarithmically more powerful readers, ie enough to fry your brain as they read whats in your handbag. Sure, new physics may change that picture, but at the moment these tags are mch less of a worry than other privacy issues.
> Today.

> Tommorrow. Who can tell.

> Yesterday. It took a room full of computers
> to send a man to the moon.

> Today. I have more computing power in my
> laptop.

> Beware the creep.

> Michael Ross