Open Water Swimming Tools – Wrist Transponders
The athletes at major international races often wear two transponders on their wrists. The transponders are light with limited GPS capabilities. 
In the call room, the officials hand out the transponders one-by-one to the swimmers who are responsible for crossing the finish line with both transponders. The transponders enable the timing company and race officials to know (1) when the swimmers pass under the timing truss for a split time, and (2) when the swimmers hit the vertical touch pad at the finish line.
Copyright © 2010 by Open Water Source
Southern California native, born 1962, is the creator of the WOWSA Awards, Oceans Seven, Openwaterpedia, Citrus Corps, World Open Water Swimming Association, Daily News of Open Water Swimming, Global Open Water Swimming Conference. He is Chief Executive Officer of KAATSU Global and KAATSU Research Institute. Inductee in the International Marathon Swimming Hall of Fame (Honor Swimmer, Class of 2001) and Ice Swimming Hall of Fame (Honor Contributor - Media, Class of 2019), recipient of the International Swimming Hall of Fame's Poseidon Award (2016), International Swimming Hall of Fame's Irving Davids-Captain Roger Wheeler Memorial Award (2010), USA Swimming's Glen S. Hummer Award (2007, 2010) and Harvard University's John B. Imrie Award (1984). Served on the FINA Technical Open Water Swimming Committee and as Technical Delegate with the 2011 Special Olympics World Summer Games, and 9-time USA Swimming coaching staff. Note: WOWSA only recommends products or services used or recommended by the community. WOWSA does not receive compensation for links or products mentioned on this site or in blog posts. If it does, it will be indicated clearly on that specific post. See WOWSA's privacy policy for more information.
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