

The website lists some features that enhance legibility. Some are common sense (ex. 1, l and I all look different), some are less obvious:
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Unambiguous Letterforms
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Clear Uprights
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Distinct Pairs
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Open Counters
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Spurs and Tails
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Special Circles (although this one could be just branding)
Excellent idea! I’m sure that information will be readily available from independent trustworthy sources that are not the government! Failing that, I always have my trusty mass spectrometer in my kitchen and I run all my foods through it just in case!