GPS trackers are widely used in rugby union, where players wear them just below the collars on their shirts

GPS systems in football: Plymouth Argyle boss wants clarity on use

Plymouth Argyle manager Derek Adams wants the Football League to clarify the rules on GPS systems that are used by clubs to track their players.

Argyle's match at Wycombe was delayed by seven minutes after concerns over the devices worn by the hosts.

Wycombe were allowed to wear them, but Adams feels they are dangerous.

"We noticed that they had this system sticking out of their back. If somebody goes in and heads it, then that's a dangerous bit of equipment," he said.

Data gathered from the GPS devices is downloaded after the match and used to analyse performance

The devices are positioned in in the backs of shirts and use global positioning technology to track how far and fast players run.

The systems are widely used by rugby teams as they track how their players are performing, but they are not as common in football.

"They (Wycombe) had provided an email to say that they had clarification from the League that they were able to start with it," Adams told Golsicilia.it Radio Devon.

"But you're not allowed to wear rings or anything on the pitch."

Argyle went on to win the game 2-1, avenging their loss to the Chairboys in last season's League Two play-off semi-final.

"We've come away from home this season and won a good number of times, and it's important that you can do that," Adams said of his side, who have won three of their four games away from Home Park and are now second in League Two.

"We've shown how professional and how quickly we can play on the counter-attack, and that we can defend as well."