Who said QR codes are starting to fizzle?  Wrong…those codes link to a lot of information through one snapshot — and Mercedes-Benz may just use that efficiency to save lives. The automaker is putting the symbols on vehicles so that emergency crews just need a phone camera scan for easy access to rescue sheets, which are schematics that show where to cut into a wrecked car when recovering trapped passengers. With such immediate knowledge, rescuers don’t have to wait for a model confirmation or else risk cutting wires and fuel lines. While we’ll initially see the QR codes only in Mercedes-Benz cars made this year and beyond (placed inside the fuel door and on the opposite side B-pillar), the company isn’t being selfish: it’s refusing to patent its method in the hope that every vehicle manufacturer will quickly embrace the technology.