The gold standard of early detection is dermatoscopy.

A dermatoscope is a hand-held microscope which is used to study individual moles and skin lesions. It magnifies the lesion, bringing features into focus that are impossible to be seen with a naked eye. This tool allows the doctor to diagnose skin cancers much earlier than it is possible to do with the unaided eye.

With a dermatoscope, a doctor skilled in its use can diagnose 90% of melanoma skin cancers that present to a clinic. Using just our unaided eyes, that detection rate drops to 71%. (Canadian Family Physician.2012 Jul;58(7):740-745)
It can take a number of years to become a confident dermatoscopist. Dr. Enyvari has been using dermoscopy for 10 years.