How do you communicate in real time? Even a phone call can lead to bias unfortunately (accent, name, etc). Unless you fully are anonymous it is hard to eliminate bias
Well phones have worked rather well for the past few decades. These days video calls tend to lead to rejection while phone calls leads to a successful engagement. Seems as though lack of video is more anonymous and removes the ability to judge someone based on their backdrop
And don't accept candidates without video chatting first, or who behave weirdly in interviews