Hot Spot technology used in cricket is to undergo tests after doubts were raised over its effectiveness.
The system uses infra-red cameras to check whether a batsman has hit the ball when a fielding team claims a catch.
However, rumours have suggested that some batsmen may have put Vaseline on their bats to reduce the chances of a slight nick being shown.
"I would imagine that Vaseline would restrict the friction of the ball hitting the bat, so if you reduce the friction you are going to reduce the Hot Spot," Hot Spot owner Warren Brennan told ESPN Cricinfo.
"It might take us a week or even longer to test all possibilities."
Hot Spot is part of the Decision Review System (DRS), although only limited DRS is being used during the current series between England and India.