Toggle for Touchscreen

[MobileAZN]

Problem

Sometimes my kids run by and touch my screen while I'm otherwise using the computer. For those of us with touchscreens, it would be nice to disable the touchscreen.

Proposal

In the same vein as the toggle for rotate lock, it would be nice to have a toggle to enable/disable the touchscreen. It doesn't necessarily need to turn it off, although the power savings would be nice, but just ignoring the input from the touchscreen device would be good. Only display this toggle if a touchscreen is detected. Maybe this is also seen as a tablet to the system, so that would be something to consider.

Prior Art (Optional)

Rotate lock toggle is how I envision this, both in area it's located and in switch states. On/Off, easy peasy.

[MobileAZN]

Also, from a technical standpoint, here is the systemd "backend" of doing this:

Using the ability to disable a single USB device, we need just to create a UDEV rule. Create the file in
/etc/udev/rules.d/80-touchscreen.rules

You can find idVendor and idProduct for the next step by running
cat /proc/bus/input/devices

With following information
SUBSYSTEM=="usb", ATTRS{idVendor}=="from_above_step", ATTRS{idProduct}=="from_above_step", ATTR{authorized}="0"

You can reload the rules without restart
udevadm control --reload-rules && udevadm trigger

[teamcons]

this has the risk of the user effectively boinking access to any functionality because they suddenly have no input anymore to undo the action
(unless USB mouse on hand)