The slow, but steady, infiltration of devices to track your presence, purchases, buying habits, etc. have increased more than 100 fold in the last year. There are now RFID (Radio Frequency IDentification) tags in your Credit Cards (Easily tracked by hackers) toothbrushes, razors (Gilette), auto tires (Michelin), and 100's of other consumer products and Identification cards.
If you own a recent GM car with On-Star, whether you subscribe to it or not, On-Star is watching you! They know your mileage, where you've been, your engine status, how fast you've been driving, how much gas you have in the tank and much more. GM says that you cannot order a car without it and will refuse to tell you how to disble it. Simple, just cut the antenna cable and be done with it! If you are happy with this, and they are betting that you will be, you get what you deserve - buyer beware!
The State of California and the State of Oregon are testing a program to charge you taxes by the mile instead of by the gallon. The folks who have high mpg cars will get shafted. If you don't pay your taxes (in the future) at the pump, your car won't start... Think this is Sci-Fi? No way! It's happening today.
Am I totally against this technology? No, as long as the consumer is made completely aware that these devices are being used and labeled as such, or if someone actually WANT's it! If you send an e-mail to Gilette asking them if your razor has an RFID tag, they will never answer you. If you call your credit card company and ask about RFID, they will not know what you are talking about, only upper management knows.
Your credit cards are fair game for hackers, totally without your knowledge and your cards can be read up to 50 feet away from you.
A simple shield with protect you from this (www.norftags.com) and take a look at www.spychips.com for in-depth info - it will bother you!
All technology has very useful purposes when managed properly and full disclosure is supplied. The manufacturers will never voluntarily tell you this information.