Why is it needed . Skin passport appeared not so long ago as both a term and a technology, it lies in the fact that with the help of equipment, including those based dermatoscopy, everything is recorded and a new growth on the skin, mainly of a pigmented nature, is a nevus, it can also be a keratotom, and then how is it used . Each neoplasm has its own serial number, from one to infinity , with here we have a patient who has 1,128 neoplasms, each element has, naturally, its diameter is calculated, its depth and its color are estimated, a patient in whom, lets say, was found when drawing up a skin passport , two, maybe three, maybe more dysplastic nevus, yeah, it is under control, dysplastic nevus, as a precursor of melanoma, it is potentially dangerous, it can be removed immediately, and then after a histological examination. Or reject this diagnosis, or you can come back in a year, a skin passport will be drawn up again, and we will see that some element has increased in diameter, wel