What is a switch with this kind of wire?

Can wires also become an interactive interface? With this kind of wire, you can switch the light, change the brightness and change the color of the light without switching; With this kind of wire, you can adjust the earphone volume without switching it on and off; With this kind of cable, you can even use it to control the computer's instructions, and forcibly unplugging the USB will no longer be a problem.
This amazing wire comes from some interesting explorations carried out by the cordui project at the Massachusetts Institute of technology. The researchers of this project are from the tangible media group and the fluid interfaces team.
The principle of this kind of wire is that we can regard the wire as a water pipe, flowing electricity and data. You can bend or knot the water pipe to change the flow of water. Similarly, wires can also be used.
One of the ideas is that the electric light can be turned on and off through the bending of the electric wire. Using a microcontroller and a wire that monitors the current, the wire becomes a switch. Bend the wire and the light will turn on. Repeat this action and the light will turn off.
At the same time, we can control the color and brightness of the light by limiting or expanding the data flow on a power line equipped with a bending sensor. Tie a knot on the wire. As you tighten the knot, the light will become darker and darker, and vice versa; Even with the change of the knot position, the color of the light will change. Or simply tie three knots to represent the red, green or blue of rgb-led lights.
Another idea is to control the music playing on the mobile phone by squeezing the earphone cable (embedded with a capacitive sensor). This is like operating the buttons on the headphones to control sound and play, but the advantage is that it is easier to interact.
Finally, if you often pull out the USB cable by force, you can also do this: add a tension sensor on the USB cable, and pulling the cable is equivalent to clicking "pop up"; Or, put a book on the computer charging line and the computer will go to sleep.
This is a way of giving a sense of physical presence to invisible data. It seems that using this kind of wire neither saves time nor provides much convenience. In this regard, cordui researchers said that the project is to stimulate people's thinking, not to make commercial things. At the very least, in our view, this is really very interesting.

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