article_snippet: Now budget carrier EasyJet has announced the new move will come into force tomorrow and aviation insiders say there are moves to make it 'mandatory' across all airlines .
article_snippet: Flybe and Ryanair Ryanair said Ryanair already had such a system.
article_snippet: Ryanair said: 'There is some industry chatter about the policy becoming mandatory.'
highlights_snippet: EasyJet, Virgin Atlantic and Norwegian introducing rule to avoid disaster .
  
highlights_snippet: Jet2, Monarch, FlyBe and RyanAir say the  procedure is already in place .
  
highlights_snippet: Industry insider said practice could become 'mandatory' across all airlines .