Those matrix-like bar codes that have popped up recently, may soon also be found on a research poster near you. QR codes, or quick response codes, can be read by bar code readers and smartphone cameras. Jay Buckley at PosterSession.com's blog — PosterSession.com prints posters — says that he's seen posters with QR codes. "What's cool is that you can have the code point to your bio page (they can contact you about a job) or page where your poster is uploaded (no more handouts required)," he writes.