I don't know much about the efficacy of those systems, I just looked into patents on diagnostic systems for melanoma awhile back—there's a dermatologist elsewhe

I don't know much about the efficacy of those systems, I just looked into patents on diagnostic systems for melanoma awhile back—there's a dermatologist elsewhere in the comments who might be able to speak with some authority about it. My sense is that such systems are primarily for surveillance, detecting changes over time. I suspect that in a controlled study against standard photographs of your body over time (the kind you can do at home) both methods are equally useful. The variable would be how diligent you are in taking those photographs—if you do those with the frequency one should, and cross referencing photos over time, my guess is you're as likely to catch something as what you'd get out of a regular series of visits to a Molescan clinic.