Sony may not be planning on blocking used games with its new console, but that doesn't mean they won't be taking measures to prevent piracy. A patent submitted back in 2011 (via NeoGAF) suggests that Sony may have a plan to combat illegally reproduced games with its new console.
The technology compares a game's load time with the expected time it takes to load the title in order to determine whether or not it is a pirated version of the game. Check out the nifty chart below for a visual representation of Sony's plan.
No where in the patent does it specify the PlayStation 4, so there's no reason to jump to conclusions just yet. Sony files patents all the time, so it is quite possible we'll never see this come to fruition. That said, let us know what you think of these potential anti-piracy measures in the comments below.