Offside trap

2019-03-07 03:16:04

By Barry Fox The offside rule in soccer still defeats most mortals—including match officials. Soccer referees can be fooled by parallax, as players dash into illegal positions (New Scientist, 4 March, p 8). So Norwegian inventor Kjell Hattland suggests in WO 99/47217 that assistant referees take more responsibility for offside decisions. A line of light sources along one side of each half of the pitch, are shielded so tightly they are only visible from a narrow angle. This helps the official keep level with players,