You can pretty much eliminate the problem by refusing to text, kik, or give access to photos in any way except through opening your gallery of face pics. You can eliminate the rest by noting the similarities in the profiles of those you're pretty sure are solo men (they're unlikely to be single, actually, more like wannabe swingers who can't imagine talking to their wives about their desires) and then avoiding comparable profiles.
I'm pretty rigid about not video chatting or talking on the phone, because I can't be bothered, and bonus, I've found those who insist on it are unlikely to be a good match anyway (it's a personality thing). Just thought I'd give you another data point to consider.

