Apparently this is the latest way of pranking people. There is an application in Apple devices that allows you to transfer a file using WiFi or Bluetooth without using mail. This is used by some people to transfer pornographic images to someone’s phone, for reasons ranging from abusive behaviour to childish mischief. Whatever the motivation, to cyber-flash someone is illegal. There was a story about a whole carriage of commuters being subjected to cyber-flashing just before the doors of the carriage opened to allow the perpetrators to escape giggling from the station.