England and Australia are under investigation for allegedly applying silicone tape on their bats in an attempt to beat the decision review system, reports the Telegraph.
Hot Spot, which is used to help identify whether a batsman has clipped the ball, is one of the methods available to the third umpire.
But during the series it has failed to prove decisive and its claimed the players of both nations are adding the tape to prevent faint edges showing up on the review system.
The system can identify whether a batsman has clipped the ball by the heat and friction generated when the bat hits the ball.
However, the allegations over the tape to make the bat surface smoother means less friction would be generated, therefore creating less heat for Hot Spot to detect.
Several controversial decisions have been made by umpires in the series, most notably the dismal of Kevin Pietersen in the final innings of the third Test.
Concerns were raised after the 33-year-old was confident he hadn't touch the ball, which wasn't picked up by Hot Spot, but was given out after sound detectors revealed a faint noise.
Captains and coaches of either side have voiced their support of the DRS but their trust in Hot Spot has faded.
Andy Flower, England head coach, said to reporters: "I thought that DRS had worked pretty well in international cricket prior to this series but in this series it hasn't worked well at all."
The ICC's general manager, Geoff Allardice, has flown to the UK this morning and will meet with the senior representatives of both parties to reassure them over the DRS during a series full of controversial decisions.
Warren Brennan, the Australian inventor of the technology, has blamed the players for deliberately attempting to deceive the umpires.
Both the ICC and Brennan are happy for Hot Spot to remain part of the system in the remaining two Ashes Tests, but the Aussie could pull it out if he believes it needs work to improve its accuracy.
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