Hi fencers, Just a thought, how hi-tec works nowadays and the possibilty of fraud during matches. Question 1: can signalling units be influenced by remote controllers? If so this has to be inspected and prevented. As a teacher I have another thought, at examinations students have to hand in their watches, their cel phones and may not have any earphones. Because of the earphones, all the students must have uncovered ears. Maybe this is to far fetched for sports. So question 2 is, should this also be applied in all the sportsevents just to prevent coaching during the matches?