UHF Foam transponder - Dogbone

UHF Race Bibs

Custom Race Bibs for high accuracy race timing

SIVA’s UHF Foam transponders feature a 3mm wide foam spacer and made compatible with printing & encoding using select RFID enabled Thermal Transfer printers. Contact us for printer recommendations.

The UHF passive Foam transponder is attached to the back of the number bib, which sends out a unique signal, enabling the system to identify the athlete/participant and record their respective times. The UHF passive foam transponders can be supplied with optional Printing & encoding facilities.

By using the latest IC along with a finely tuned antenna design provide for best in class read range & performance.

Check out our Youtube video to see how easy it is to Print & Encode our UHF Foam tags with an RFID enabled Thermal transfer printer


  • Marathon and Ultrathons
  • Sprint Races


  • Customer specific encoding of EPC
  • Customised printing of logo, text, barcode etc