MZSoft Studio
Using the Laser Pointer and Camera Bubble in ShowCam
TL;DR
The laser pointer trail fades by itself. The camera bubble is draggable and can use the front or rear camera; Pro adds size, corner shape, border and shadow.
Use the laser to guide attention. Its trail tapers away on its own.
Drag the bubble away from the part that matters. Pro lets you style it and use background effects: blur, virtual background, or cutting yourself out.
FAQ
Can I draw on the slide? Pen and highlighter with undo are in Pro.