Tottenham boss Harry Redknapp felt for Robbie Keane after their World Cup heartbreak.
Keane's goal looked to have sent the play-off with France to penalties until Thierry Henry's "handball" helped guide Les Bleus to South Africa for next year's tournament.
"We're watching it on TV and can see in seconds that it is a handball," Redknapp said.
"The fourth official is standing there stopping people standing a yard outside the technical area. He could be watching the screen for vital decisions.
"Not every decision but vital ones and it would only take seconds. We've put a man on the moon and we can't see if the ball has hit a hand. And it's not going to stop the flow of the game.
"Maybe like in tennis where they have three or four appeals per match. It was so blatantly obvious and unfortunately the human error has cost Ireland."
Keane will want to take his anger out on Wigan this Sunday in the Barclays Premier League clash at White Hart Lane - if he is mentally and physically ready to play.
"Robbie's been working with the fitness guy, having a stretch and a massage," Redknapp said.
"It was a tough game, with extra-time as well.
"It was disappointing to see. They worked so hard and played so well. To go out of the World Cup to such a disputed goal, an obvious handball, must have been a massive disappointment."