Moving OT a little - it seems that signing things should be a [more] central part of all major OS nowadays. Our OS should be signing the docs we send for us, signing our emails for us, signing pics we send to family so they can see they haven't had any changes made in transit, etc., etc..

I can see problems with peoples systems being hacked and made to sign stuff, but surely having the signing system in the first place leads to enough gains overall - provided it can be made simple, clear and useful for the common user.

/uninformed rant