Touch sensitive technology
Application
Safety features in cars
Convenience with electronic appliances (e.g. phone, iPod)
Assisted home living
"Smart" Offices/Rooms
Acceptance by society
Worries about electricity passing through their body (even if it is a stupid worry)
Creates laziness factor
Technology is bad factor
Costs
Sensors that are sensitive enough to detect the required leves
Software sophisticated enough to recognize different settings
Access for developers to work with and create more and more uses for the technology