Those square graphics of squiggles - QR codes - are found on everything.
We use them to find sale prices on items in stores, use them on organization and event flyers for more information and myriad other uses. Our smartphones translate the squiggles into practical information.
I've always thought that it would be great to have a personal genealogical QR image that could be put on T-shirts or hats worn at a gen conference, or perhaps on our conference badges.
Point your smart phone at it, and see what families I'm researching, from where, my DNA haplogroup, what gen societies I belong to and other relevant information.
I generated my own QR code at http://myqr.co/, a free site.
Wouldn't that be an innovation at genealogy conference?