Some more KDE Connect goodness: during your presentations, use KDE Connect to move through your slides.
Or put your finger on the "Pointer", point your phone at the screen and a flaming circular pointer will appear. Higlight what you need by moving your phone.
@nesc @vamp898
KDE devs are working on this. It has become a priority of the "We care about your Input" goal.
https://phabricator.kde.org/T17433
We are currently working on implementing a new virtual keyboard called QVK that will built into Plasma:
https://invent.kde.org/plasma/qvk