It’s so nice to get a really useful piece of technology. Researchers using a laser scan were completely accurate (100%) predicting whether a mole was cancerous. (article here) Anyone who’s been concerned will appreciate getting that kind of feedback, although they’ve just done the preliminary study.
My concern about skin biopsies has always been that by the time you’ve got the results the cancer may have spread. If this works out, the dermatologist could get the results and perform the complete removal in the same visit. Much preferable.