There's been significant progress in that direction. Package signing[1] is the major new feature in pacman 4[2].
414 karma · joined October 31, 2011
There's an implied 'because' between these two sentences, which I think is problematic, since the first sentence does not necessarily follow from the second.
I couldn't care less about the second part, but the first is a great idea. When I visit the website in your profile, though, I don't see any mention of hardware, just software.
Is there more information available somewhere?