HEADPHONES. Use them with all gadgets. They may still be audible, so regulate the volume carefully. If you’re listening for a flight announcement, keep one of your ears free.

LAPTOPS. They’re fine for work on the go, but save sensitive stuff for home, office or hotel. If you really must pull up that top-secret work memo, use a laptop privacy filter. (Like the Notebook Privacy Filters, sold by 3M, pictured below.)

PICK YOUR MATERIAL. When watching movies or playing video games, weigh whether these might offend a seatmate. R-rated flicks and M-rated games might not go over well.

DON’T BE NOSY. “It is not proper to look over someone’s shoulder to see what book they are reading or what they are typing,” says veteran traveler Dianne Daniels. “It’s rude.”

DON’T DISTURB! Someone using a laptop and/or phones probably doesn’t want to be bothered, so don’t, says seasoned traveler Peter Shankman. “It screams, “Leave me alone!”‘

TYPING TECHNIQUE. Don’t type noisily with fingernail tips, says Laurie Puhn, author of a “Rudeness, Interrupted” blog (lauriepuhn.com). “Use the fleshy part of your fingers.”

BRIGHT SCREENS. These can annoy others on night flights. Dim the screen (it will remain perfectly legible in the dark) and angle it away from a sleeping or reading seatmate.

BE SPACE-CONSIDERATE. Use of an extra-wide laptop doesn’t entitle you to more elbow room. If there’s a laptop user behind you, show some mercy and keep your seat erect.

SEEK MORE SPACE. If your flight isn’t crowded, move to a more secluded seat. At a Wi-Fi hotspot, position yourself with your back to a wall, says traveler William Kotis III.