The International Rugby Board will trial greater use of video technology in the English Premiershipship and South Africa's Currie Cup next season.
The referee will be allowed to ask the television match official to rule on any incident in the lead-up to a try, dating back to the last stoppage in play.
The TMO will also be able to alert the referee to fouls he may have missed.
Previously the TMO has only been used to give input on decisions regarding the grounding of the ball.
A concussion bin will also be trialled to make players leave the pitch for five minutes and have tests to rule out brain injury.
The concussion bin will be forced upon players if the team doctor or referee suspects they may have suffered concussion, with a temporary substitution being made.
The player will not be allowed to return to the field if the suspicions are proved right after tests.