They are often not secured properly inside the cards or toys.

FORBES: Post-Father's Day Health Advice: Throw Away Those Electronic Greeting Cards Before They Hurt Your Child

Mr Carr said he believed it was sent by the Real IRA. He said the dissident republicans have threatened him before, sending bullets inside sympathy cards.

BBC: NEWS | UK | Northern Ireland | Device sent to home of DPP member

Do not use Eye-Fi cards inside aircraft, or where the use of radio transmissions are limited or forbidden, or set the Eye-Fi card's transmission function to OFF.

ENGADGET: Olympus Stylus TG-625 Tough adds AF light for tricky shots in rough situations