If you can't read someone's resume without rejecting them based on age, gender, marital status, education or lack thereof, or for their non-sw work history, then it sounds like you're not a very good person to be interviewing candidates. The concept of "unconscious bias" might be true in an academic sense, but in a very real way you should be treating people with respect regardless of their characteristics, especially during an interview process. Not reading someone's resume isn't just rude, it's supremely disrespectful.

I take a completely different approach, because I have been on the receiving end of disrespectful interviews and I won't stand for it and I don't expect the candidates I interview to accept it either. I carefully read the resume and research the candidate far in advance to the interview. I only ask questions during the interview which are open-ended, not trivia questions, and are directly related to either the content of the candidate's resume or things we're actually doing day-to-day on my team.

The dog and pony show interview style is intensely disrespectful and so is the idea that you won't even read a candidate's resume. I've walked out of interviews where both have happened, and I hope everyone on HN gets the personal confidence to do the same. I'm a professional, I expect to be treated like a professional, and I return that by treating those I interview like professionals. End of story.