![](https://lemmings.world/pictrs/image/246ef9a4-6f16-4384-9285-6cd251c3e6a6.png)
![](https://lemdro.id/pictrs/image/6d56629c-a7b1-465d-8b58-ad77926e3a41.png)
I have no idea why you would use a pen to turn pages???
Because the pen can be held in the other hand which can be anywhere - you turn the page with a click of a button. And the pen doesn’t have to be anywhere near the screen. After a few hours of reading you can feel the difference between having your hand in a natural position and forcing it in a position to be able to turn the pages.
Isn’t that relatively old news? I’ve been using them in Symfony for a few years, already.