06 July 2020 last updated at 12:54 GMT
 
Hot Spot not 100% accurate: Inventor
Tuesday 02 August 2011

The Decision Review System has once again come under a cloud of controversy after Hot Spot inventor Warren Brennan conceded on Monday the infra-red technology was not "100 per cent accurate" following the vaseline row during the second Test between India and England.

England's fielders were convinced Indian batsman VVS Laxman had edged a ball from James Anderson on Saturday, but the confident appeal was turned down both by the on-field umpire and the TV official.

"Anything you can apply to the bat would reduce the friction between bat and ball and that can hinder detection on Hot Spot," Brennan said.

"This is not something that we have tested yet, but we will attempt to test it this week.

"Look, I have always said Hot Spot is not 100 per cent accurate. Over the years we have found that occasionally we do not get hot spots when we are expecting them, particularly on the faint edges."

The Hot Spot technology is now a mandatory part of the Umpires Decision Review System (UDRS), but Hawk Eye, a ball-tracking system, was made optional following objections by India.

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