They were supposed to make everything better. And maybe they did, a little. But it's time for them to go away now. Sorry, QR codes. It's been real.
QR Codes
Source: technologycouncil.com
Imagine a hyperlink, except instead of actual readable text that you can type in, it's some weird ziggurat that gives no hint of where it's going. Also, instead of clicking on it, you have to take a picture of it with your camera, and you're probably going to have to take that picture three or four times before it works, and a lot of the time it's going to send you to either a non-mobile site or a dead link. If they all disappeared tomorrow, not one person in the entire world would care, not at all.
Routers
Source: pyramid-of-wisdom.com
For some reason, they all look like they were made in 1995 and most of them act that way too. Everything they do would be much better in a scaled down, Airport-Express-style dongle. Time to burn this one down and start again.