I don't think Granny would ever stoop to wearing airbags around the house, just in case of a fall.
The Tokyo-based company, Prop, created the airbags to protect elders head and hips, the most vulnerable areas, but also for those with epilepsy, who are prone to sudden - and dangerous - falls.

This attractive device works by inflating if it starts moving quickly towards the ground. Electric sensors feel the movement and activate the airbags. As soon as the alarm is set off, 15 litres of compressed air are injected into the inflatable pads - puffing them up to protect the most vulnerable parts of the body.

Japan has a large elderly population, with nearly 30 million people over the age of 65, hence the huge market for "senior" products .Click on this BBC link for a video of the airbags in action.

Though the cushions only weigh 2 and a half pounds each, I don't think Granny is going to fall for it.

Via Switched (and Daily Telegraph).