[akagr]

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.

[rs_rs_rs_rs_rs]

>Moreover, there’s only a subtle difference in curvature between a zero and English letter O

I disagree, "zero" being an oval while "capital o" being a circle is a big difference. I don't undestand how can people not see it...

[mikedc]

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.

[0] https://github.com/rsms/inter/issues/89

[1] https://github.com/rsms/inter/issues/1

[halotrope]

I should have added “free” and “variable”. Of course there are better fonts with respect to various details or simply taste.