Video review technology will be available on six courts at this year's Wimbledon, the All England Club has announced.
The introduction of Electronic Line Calling last year caused some controversy, with a high-profile malfunction marring Sonay Kartal's fourth-round clash against Anastasia Pavlyuchenkova.
But that has not stopped organisers giving the green light to more technology, with players in singles matches on the six show courts permitted to challenge certain calls made by umpires, for example on whether a ball has bounced twice or if a player has touched or leaned across the net.
It will also apply to hindrance calls, which could prove contentious. In Indian Wells last week, Britain's after the umpire decided, on review, that a gesture he had made had put off his opponent Daniil Medvedev despite the point continuing.
Meanwhile, scoreboards will display a visual signal when shots are out after feedback from last year's tournament that fans struggled to hear the automated calls.
Chief Executive Sally Bolton, said: "Each year we look for ways to evolve and enhance Wimbledon, both on and off the court.
"Through various enhancements ranging from a new public dining offer, the introduction of Video Review technology, and improved accessibility for live Electronic Line Calling, we want to deliver the best possible experience for everyone at Wimbledon."
A hindrance refers to a situation in which a player is hindered from making a shot by anything that is not within the player's control other than a permanent fixture or a spectator's outcry.
Types of hindrance include talking, grunting, outside noises, repeated request of your opponent, body movements, loose items and injuries.
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