= 13.56 MHz ISO15693 RFID tags =

13.56 MHz RFID tags are a great choice for small RC vehicles as they are extremely light weight and do not require a power source. They draw their power from the RF field generated by a 13.56MHz reader such as the [wiki:S6350 TI S6350 reader].

The following tag can be used with the TI S6350 module:

[http://focus.ti.com/docs/prod/folders/print/ri-i02-112a-03.html TI HF large rectangle transponder]

It can be purchased from Mouser here:

[http://www.mouser.com/Search/Refine.aspx?Keyword=RI-I02-112A-03&Ns=P_SField TI tag from Mouser]

Other standard tags should work.  When using smaller tags you may need to mount them on the bottom.

= Kyosho RFID Tags =

Kyosho RFID tags are ISO15693 tags made by Phillips/NXP.  The tags are small and must be mounted on the bottom of the cars for them to be detected.  The Kyosho tags come preformatted with data.  

[wiki:KyoshoTagInfo Kyosho Tag Info]

= UID =

Each RFID tag has a unique Unique IDentifier (UID).  The UID is 64 bits long.  An example of a UID is the following hex:

E007000012C080

This UID is used by the software to track laps for that particular car.