People with Parkinson's sometimes have trouble starting a movement. When they are stationary for a while or have just risen from a chair for example, it takes a little encouragement to get their legs moving. One technique for people with canes is to kick their feet as an incentive or to have objects in front of them like stairs to step on. What would be useful for people who do not have a cane is a device that would be able to give some kind of stimulus to a foot to provide this encouragement or to have a virtual stepping stones to help movement.