EMIT, electronic punching and timing system This system is the punching system currently in most widespread use. http://www.emit.no/
International Control Descriptions for Orienteering An interactive quiz for learning or reviewing the international control descriptions (IOF symbols). http://www.fortnet.org/icd/
Orienteering Interface Standards Project The homepage of an important effort to make open standards for everything in orienteering hardware and software systems, including timing and punching systems, event administration software, position monitoring systems, speaker software, and course setting software. http://www.orienteering.org/tdc/interfacestandards/