following Health and safety guidelines, wouldn't large 17inch+ screens be banned? due to the recommended safe viewing distance.. unless you have really long arms, or a long pointy stick with a rubber finger on it..
and what about people who cant hold their arms out straight due to having 1 to many car crash accidents? how would it work for them?
and as for the facial gesture emotive stuff.. unless your a zhen taoist buddhist monk or 'dead on the inside', how would you be able to control what happens in your thoughts? one quick smirk when reading "well dodgy joke thread" could plunge the world into nuclear annihilation if your name is George W Bush and you have a big red button wired up to your PC.. and what if you are reading your e-mails when on the toilet? the smirk of relief after dumping a brick, could also have unforeseen consequences..