Input Mono, like many monospaced fonts, has the `zero slash` extra, which you can should be able to use if your application lets you choose the alternates and s

Input Mono, like many monospaced fonts, has the `zero slash` extra, which you can should be able to use if your application lets you choose the alternates and stylistic sets provided by OpenType fonts (https://docs.microsoft.com/en-us/typography/opentype/otspec140/features_uz#zero https://docs.microsoft.com/en-us/typography/opentype/otspec1...). And, in the case of Input Mono, it's also provided in the Private Use Area, at UEO5C. (There are other characters that are frustratingly similar to the zero. There are the oslashes at U00D8 and U00F8, the Ocentered tilde at U019F, various thetas, the circled dash at U229D, the circled fraction at U2298, the circled minus at U2296, the empty set at U2205, the diameter sign at U300, etc etc. The dot is quite a nice solution.)