Even tires often have RFID, and have for a long time. And even the TPMS sensors in valve stems: They go on their merry way, broadcasting their unique ID (and t

Even tires often have RFID, and have for a long time. And even the TPMS sensors in valve stems: They go on their merry way, broadcasting their unique ID (and tire pressure) to anyone who cares to listen. It's all quite real, and it is pervasive. The only question is: Who, if anyone, is listening and keeping track?