The display switch is a fun hack, but even a decade ago I think there were already programs where you could just wag your mouse over to the other screen of a co

The display switch is a fun hack, but even a decade ago I think there were already programs where you could just wag your mouse over to the other screen of a computer. It doesn't need a display switch at all, just an app on both computers that passed the input from one to the other over the network under certain situations. Such apps are still used frequently today where people will bring a Macbook Air and an iPad to a hackathon and just use the iPad as a second screen. This became a big thing when everyone had to throw out their old PS/2 KVMs for USB ones or just use a software solution. This is true of me too, a lot of times I have fun writing something already done, although it is kind of a sad waste.