AirDrop lets you transfer files between iOS devices with a swipe of your finger.
It also lets you transfer the files to devices nearby.
Verge writer Josh Lowensohn used a clever way to warn people about this default setting in iOS 8.
He sent by Airdrop pictures of sloths wearing spacesuits to commuters on a train in San Francisco.
Not everything is as pleasant as a sloth in a spacesuit.
I used Apple’s AirDrop to Troll strangers with photos of space sloths| The Verge viaiMore