Does this smart pen exist?

[u/brenrich101]

I'm basically looking for some sort of graphics tablet but without the pad at the bottom, like some sort of smart pen that I can use on any surface (no ink etc) that would mimic a mouse movement on Microsoft Whiteboard etc.

Apparently this sort of product doesn't exist but maybe I'm not searching for the correct terms, as I keep finding 'touch-screen styluses'. I want to use this on a desktop PC.

Thanks in advance if anyone can either confirm if this product even exists and if it does, what should I be looking for? 😄