It takes very little to get a soccer game started. Two or more people kicking at something, make a goal out of some chairs or maybe even just a gap between trees, and it’s on. Soccer can be very low tech. But clubs looking for an edge over the competition keep turning to high tech to analyze game play and help with training. Tech advances are noticeable for those who are glued to the TV this World Cup tournament as referees frequently use instant replay to make calls.