Just another example of our surveillance future:

Each wheel of the vehicle transmits a unique ID, easily readable using off-the-shelf receiver. Although the transmitter’s power is very low, the signal is still readable from a fair distance using a good directional antenna.

Remember the paper that discussed how Bluetooth radios in cell phones can be used to track their owners? The problem with TPMS is incomparably bigger, because the lifespan of a typical cell phone is around 2 years and you can turn the Bluetooth radio off in most of them. On the contrary, TPMS cannot be turned off. It comes with a built-in battery that lasts 7 to 10 years, and the battery-less TPMS sensors are ready to hit the market in 2010. It does not matter how long you own the vehicle ­ transportation authorities keep up-to-date information about vehicle ownership.