The VAR system has had a mixed reaction after being trailed at the Confederations Cup.
There was confusion in Cameroon’s defeat to Germany when referee Wilmar Roldan watched a replay before handing the wrong player a red card.
In another incident, Chile were denied a clear penalty against Portugal as the VAR was not consulted.
There was also controversy during England’s defeat to France last month, when Raphael Varane was sent off and a penalty awarded.
But Infantino is not worried about unleashing the technology at the main event in Russia in 2018.
“Nothing is standing in the way of using VARs [at the World Cup], as far as I’m concerned,” Infantino said.
“So far it has been successful. We are learning, we are improving, we are continuing the tests.
“Without the VARs, we would have had a different tournament. And a tournament which would have been a little less fair.
“We need to work still on some of the details, on the communication and the speed of the decisions being taken.”