I thought this might belong in the Expanding the World thread, but discussions surrounding this sort of thing could take up its own topic.
So, it's been fifty years since Danzo, Akatsuki, etc. Any advances in technology that have been made? Perhaps technology that was confined to movies or filler that you feel can now be assumed to be mainstream? Post your idea here and I let it be approved by the masses!
Hmm, cell phones?