England and Wales Cricket Board chairman Giles Clarke believes the controversial Umpire Decision Review System needs to be refined to be effective in international cricket.
The practice of using television feeds to query the decisions of on-field umpires has been criticised for its application since it was adopted at the tail-end of last year.
There have been concerns over its early usage and Clarke, who saw England's series in South Africa throw up a number of issues, believes there are two crucial points which need to be addressed.
Clarke said: "There are important questions about the effective use of technology. There's a fundamental question for the sport's governing body, which is 'are we actually encouraging a lack of respect for umpires by having players questioning decisions?'
"What we also want to see is all technology used at the same time, otherwise it's taking the mickey.
"If there's no 'hot spot' what is the point? What's the point in using HawkEye but not having the sound turned up?
"We need to use all technology, then we have a question of who should be doing the referring, that's equally important."
