Here is the basic understandings of dementia in new york times website http://health.nytimes.com/health/guides/disease/dementia/overview.html
Not many products are in the market for dementia but instead, people do lots of activities, eat certain food or play games to get help in ways to prevent it.
Dementia is what most of people gets when they reach certain age but todays, many of young people are experiencing it too. And when someone in the family gets dementia, sometimes it may creates conflicts by telling same thing over and over.
Development of a product or a game that specifically designed for healing dementia, it will help not only the one who is experiencing the illness but also the family, anyone around them.
I'd like to contact people working around people who have dementia, family members and non-profit organziations for dementia.