McDonalds had free fitness trackers but they've been recalled

So the good folks at McDonalds thought they would get in on the Olympics action by offering free activity trackers for kids in Happy Meals.

What a great idea- sure the little ones have to eat some pretty bad food to get one but its offset by a toy that actually promotes activity, something which is increasingly important in our sedentary lives.

These 'Step-It' trackers come in six colours and have basic functions including counting steps and showing how fast the person is moving. With a side of tech and a fun look, they're well designed to appeal to the target audience.