This is an interesting subject and a clever way to approach it, but post-Snowden, I can't help wondering what will happen to all the biometric data harvested from the hand measurement section.<p>You could also check your personal compatibility with the latest mega-devices by folding a piece of paper or card to the dimensions of the phone you're interested in (or using a similar-sized object)<p>It looks obvious that evolution will eventually select for longer thumbs