For most of its history, soccer changed slowly. In the last 15 years, technology has transformed officiating, training and analysis, from the professional game down to amateur clubs with tracking apps.
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Officiating
Goal-line technology, approved by the IFAB in 2012 and used at the 2014 World Cup, tells the referee within a second whether the whole ball crossed the line.
VAR reviews goals, penalties, red cards and mistaken identity; see VAR explained.
Semi-automated offside combines tracking cameras with a sensor in the ball to speed up offside decisions.
Connected balls
Match balls with internal sensors, first used at a men’s World Cup in 2022, record the exact moment the ball is kicked. This helps offside and handball decisions and provides data on ball speed and spin.
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Wearables and load management
Electronic performance and tracking systems (EPTS), permitted in matches since 2015, use GPS and accelerometers to record distance, sprints and accelerations. Staff use the data to manage training load, plan recovery and spot fatigue that might lead to injury.
Data analytics
Clubs analyze event data (passes, shots, tackles) and tracking data. Expected goals (xG) estimates the probability of a shot becoming a goal based on factors such as distance, angle and type of assist. Analytics informs tactics, scouting and recruitment, and is now common in broadcasts.
Video and training tools
Video analysis software lets coaches clip and share key moments within minutes. Some clubs use virtual reality for decision-making training and specialized machines for repetitive passing and receiving.
Limits
Technology cannot replace judgment: data needs interpretation, wearables need context, and VAR still relies on human decisions. Critics also worry that marginal technological decisions take emotion out of the game. The broader debate about change in soccer is covered in challenges facing the sport.
