I have dell laptop: Inspiron 15R 5537.

The screen is normal (not touch sensitive).

When I read on computer screen, I would like to use my finger or a pen (not a pointed pen) to touch the screen and trace the text on it. Will this damage my screen?

If it can damage my screen, is there recommended product (e.g. screen film protector) so that I can use my finger or pen to trace the text?

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Another solution is to buy a touch sensitive laptop. But when I do pen tracing on the screen, I would have to disable the touch feature. This would be an expensive solution. 

Thanks.