Hi, Does anyone have any informations about transponder, like the one used in cars to pay toll? Is it possible to do one with PIC? Cheers, Octavio ======================================================== Octavio Nogueira e-mail: nogueira@mandic.com.br homepage: http://www.geocities.com/SiliconValley/Pines/6902/index.html voice/fax: +55 11 240-6474 "ProPic" The first Production PIC Programmer running in Windows and under US$ 20.00. ========================================================