World Championship, use electronic hogus, electronic foot socks, and electronic head protectors to register and determine scoring techniques, with human judges used to assess and score technical (spinning) techniques and score punches. Points are awarded for permitted techniques delivered to the legal scoring areas as determined by an electronic scoring system, which assesses the strength and location of the contact. The only techniques allowed are kicks (delivering a strike using an area of the foot below the ankle), punches (delivering a strike using the closed fist), and pushes. In some smaller tournaments, and in the past, points were awarded by three corner judges using electronic scoring tallies. All major national and international tournaments have moved fully (as of 2017) to electronic scoring, including the use of electronic headgear. This limits corner judges to scoring only technical points and punches. Some believe that the new electronic scoring system reduces controversy concerning judging decisions, but this technology is still not universally accepted. In particular, the move to electronic headgear has replaced controversy over judging with controversy over how the technology has changed the sport. Because the headgear is not able to determine if a kick was a correct Taekwondo technique, and the pressure threshold for sensor activation for headgear is kept low for safety reasons, athletes who improvised ways of placing their foot on their opponents head were able to score points, regardless of how true to Taekwondo those techniques were. Techniques are divided into three categories: scoring techniques (such as a kick to the hogu), permitted but non-scoring techniques (such as a kick that strikes an arm), and not-permitted techniques (such as a kick below the waist). A punch that makes strong contact with the opponent's hogu scores 1 point. The punch must be a straight punch with arm extended; jabs, hooks, uppercuts, etc. are permitted but do not score. Punches to the head are not allowed. A regular kick (no turning or spinning) to the hogu scores 2 points. A regular kick (no turning or spinning) to the head scores 3 points A technical kick (a kick that involves turning or spinning) to the hogu scores 4 points. A technical kick to the head scores 5 points. As of October 2010, 4 points were awarded if a turning kick was used to execute this attack. As of June 2018, this was changed to 5 points. The referee can give penalties