"An Indian inventor said Friday he had been given a US patent for
a device that would allow advertisements, movies and music to
Sandeep Jaidka, 37, said the small device could be attached to a
television, computer or audio system. He said the patent granted
last November involved digital signals synchronised with music or
movie sequences and could be used to produce smells or
weather-linked sensations." Full story at ZDNet UK.