Wii Sports helps burn fat - until you put the controller down. But a new gaming gadget will force you to keep fit by keeping itself in control.

Jog won't let you play unless you're jogging

Jog is a sort of hi-tech pedometer that attaches to your trousers – or wherever else you’d care to keep it – and links up to the console and its controller. If Jog doesn’t detect a decent amount of movement from yourself, then it won’t let you play the game. It's that simple.

Wii version coming soon

Designed by New Concept Gaming Ltd, Jog detects when the player takes a step and only allows movement in the game while the player is jogging on the spot.

The plug-and-play peripheral can be used with most existing videogames featuring character movement, without requiring any changes to the console or software.

Jog is available online now in the UK for the PlayStation 2 and 3, priced at £20 ($35/€25). A Wii version will be launched later this month.