IMHO there are better fonts for easy legibility. Inter’s uppercase I (eye) looks exactly same as lowercase l (el). Moreover, there’s only a subtle difference in curvature between a zero and English letter O. Ideally every single letter and number irrespective of case should look unique.
To be fair, the serifed "I" is included as an alternate[0], along with a stylistic set for other disambiguations[1] including 0/O. This requires OpenType support and some user intervention, but if you're typesetting something it's not impossible.
