Finally got to understand how to use the “tracking” value from the InDesign files I received for an app I’m working on. Thanks to this post from devsign, this is one more step to a pixel perfect label integration.
In tools like Photoshop and InDesign, tracking is the term that describes the relative amount of spacing between characters in a string of text.
A wonderful bit about tracking: pick a value, and your text will have that same visual style, regardless of the font size. It scales[…]
Source: http://www.devsign.co/notes/tracking-and-character-spacing