What is 'Snicko' and how does it work at the World Cup?

What is 'Snicko' and how does it work?ByJonty ColmanBBC Sport journalistPublished17 minutes agoSweden's fourth goal against Tunisia at the World Cup on Sunday night was controversially awarded following the use of Snickometer technology.Mattias Svanberg scored just 18 seconds after coming on as a substitute in the second half by converting a Yasin Ayari free-kick during the 5-1 win.Initially, Svanberg had been declared offside at the time the free-kick was delivered.Following protests from Sweden's coaching staff and players and after a check by the Video Assistant Referee (VAR) team, the goal was later given.Waveform technology that mirrors cricket's Snickometer (more commonly known as Snicko) judged that after the free-kick was taken, Sweden and Liverpool striker Alexander Isak got the faintest of touches on the ball - and when he did, Svanberg had moved back into an onside position, meaning the goal was allowed."It is a good finish by Svanberg, but I can understand why the Tunisian players will be disappointed because when you look at it, it didn't look like there was a touch," former Republic of Ireland striker Clinton Morrison said during BBC Radio 5 Live's coverage of the game."It must have been the slightest touch off the outside of his right boot. Credit to VAR, credit to the referee. They got it spot on."Get in touchSend us your questionsContact formContact formHow does the technology work and has it been used before?Image source, BBC SportImage caption, The waveform technology in the bottom corner indicates a spike as the ball is passing Alexander Isak's right foot to show he touched the ball 'Snicko' in sport is more traditionally associated with cricket, but in recent years, football has adopted similar technology.The Trionda match ball, made by Adidas for this year's World Cup, has a microchip in it that can detect when the ball has been touched.It is part of Adidas' Connect...