Dōjutsu is a subcategory that is not one of the main skill arts. This jutsu ability stems from the unique qualities of the users' genetics. Dojutsu techniques involve abilities inherented in the eye that do not involve Hand Seals . Dojutsu techniques have several abilities. Some of these give one the ability to read Genjutsu, Taijutsu and Ninjutsu and then defeat his or her opponent. It also gives one the ability to cast jutsu only possible by possessing the eye.