The upcoming ODI series between England and Pakistan will be used as a trial to see whether front foot no-balls can be effectively determined by the TV umpire and conveyed to the on-field official.
To assist the TV umpire, the ICC said that footage from the four side-on cameras for run-outs will be made available on a split-screen feed, along with slow-motion replays and a rewind-forward option. To receive communication from the TV umpire, the on-field official will wear a "pager watch," which will vibrate when a no-ball is called. If the watch fails to deliver the intended message, the umpires will use regular verbal communication.
The only instance when on-field umpires can use their discretion to call a no-ball during the series is if the side-on cameras are unavailable.
"This trial is being carried out to ascertain if there is a way in which front foot no-balls can be called more accurately and consistently, while also assessing the TV umpire's workload and identifying the impact it will have on the flow of the game," Adrian Griffith, ICC's senior manager - umpires and referees, said. "While we need to find out if the technology set-up for this purpose is fit, at the same time we feel this is the right time to conduct the trial as the TV umpires will have more information than ever before to share with the on-field umpires, which, in turn, will help them in correct decision-making."
Griffith said that there will be training sessions conducted for the umpires before the series. "To ensure that the match officials are thoroughly briefed and trained for this trial, the ICC will conduct training sessions with the umpires and match referee in Southampton on Monday and Tuesday. The results of this technology trial will be shared with the ICC Cricket Committee, which will advise the ICC on future action."