Top 11 Gadgets That Might Save Your Life 1:Noah Last month, Japanese engineer Shoji Tanaka unveiled his latest invention. The Noah shelter is a large, fibreglass, tennis ball-shaped flotation capsule that up to four people can climb into in the event of a tsunami. Tanaka says he's already taken over 600 orders for his invention, which sells for around £2,400. 2:Longreach Buoyancy Deployment System If you're caught in a Bondi rip tide, you'd better hope the lifeguard surfing to your rescue is carrying one of these. The Longreach Buoyancy Deployment System, designed by Sydney resident Samuel Adeloju, is a portable bazooka that allows those carrying it to 'fire' buoyancy devices at struggling swimmers up to 150 metres away. The main unit comes equipped with flares to help users identify the target and, upon hitting the water, the buoyancy aid inflates. The system is about to be trialled by lifeguards in New South Wales. 3:The Hövding The Hövding, which goe...