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Pixels per Centimeter - Dynamically accessing that for various devices

Hi folks, I doubt this can be done but I'm trying anyway. Is there a way to read a devices resolution and known how many pixels are crammed in a cm? I find myself needing to know the swipe distances and needing to calculate them but pixel density varies device to device and I was wondering if there is a way to calculate using device specs GS has access to? @Armelline has an amazing swipe factory but by my understanding the values for the devices shown were preconfigured rather than calculated with GS. Any ideas folks?

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