Redeeming Doom by Fate codes reaps you free tix and new skins, so you'll never be in a pinch, whether murderer or innocent.

There's something a bit magical about shareware stalwart Doom and folks' compulsion to make it run on absolutely everything. Present a sufficiently motivated individual with the game's open source ...

In context: QR codes were originally designed to efficiently track the types and quantities of automobile parts. Today, thanks to smartphones and mobile apps, their use has expanded far beyond that.