SNAPPING a couple of pictures while you relax onboard a flight is common practice – how else will your Instagram followers know you're going on holiday?
But taking a picture could end your holiday before it even begins.
Some airlines have policies about filming other passengers, which could result in you getting thrown off your flight.
Frequent flyer and blogger Matthew Klint was famously kicked off a United Airlines flight in 2013 after taking photos of his seat.
The airline said at the time: "We have spoken with Mr. Klint about his experience.
"Separately, we welcome customers to record their personal experiences on board provided they don't take photos or videos of customers and crew members without their consent.
"This is both a security and service measure we take that also respects the privacy of other customers. United's policy was implemented in 2010."
The photo policies are mainly found on American airlines – but Brits may be affected too.
Airlines including American Airlines, Delta, and United – which all fly to the UK – have policies on filming and photography on board.
The specific policies aren't always well publicised, with some only appearing in the back pages of in-flight magazines.
In most cases, the airlines allow passengers to film and take photos for personal reasons, like holiday snaps of your family – but some go a step further.
What's more, what happens when you breach these policies is generally at the discretion of the flight attendant.
United Airlines flies directly to the UK from several US destinations.
In its in-flight magazine, the airline said: "The use of small cameras or mobile devices for photography and video is permitted on board, provided that the purpose is capturing personal events.
"Any photographing or recording of other customers or airline personnel that creates a safety or security risk, or that interferes with crew members’ duties, is prohibited."
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