#New Idea for Contact Cards
##Rational
For some time now I've been aggravated by the concept of contact cards. As I look through my Address Book, I'm overwhelmed by the inaccuracies in there, even though I'm pretty diligent in ensuring it is up to date. There is no way of communicating an update to your info without a mass email to everyone in your address book, or sending it out over some form of social media. Beyond that, if there's someone who is not in your address book, you probably don't have a way of informing them of your contact update.
I also don't like the fact that once someone has my card, there's no way to take it back. It's a bit of a problem if someone gets your information
I love the idea of QR codes that contain embedded vCard information, and the fact that it's possible to update the information while NOT changing the QR Code. The problem remains however that once someone inserts the vCard into their address book, the only way to update it is manually.