Japan Airlines has introduced a feature on its seat booking system that shows where young children are seated.
A “child” icon appears when a passenger is travelling with children aged under two years.
One traveller said the feature let him know where babies “plan to scream… during a 13-hour trip”.
But some Twitter commentators urged him to be tolerant, while others said the problem could easily be solved with noise-cancelling headphones.
Japan Airlines’ website says the icon “lets other passengers know a child may be sitting there”. However, the airline warned the tool was not foolproof, as the icon might not appear if a ticket was booked through a third party or if there was a last-minute change of aircraft.
Even so, venture capitalist Rahat Ahmed sent a tweet on Tuesday thanking Japan Airlines for “warning” him about where children were sitting.
“This really ought to be mandatory across the board, ” he said, adding that Qatar Airways should “take note”.