Nevertheless, even physical modalities have limitations. Thus, faces seem to be unique, however, in the case of twins, distinctiveness is not guaranteed. DNA itself is unique for each individual, except identical twins, therefore, it achieves high accuracy. However, retina recognition is highly reliable, since no two people have the same retinal pattern and even identical twins have distinct patterns. We assume that neurosignature is to be one of the premier biometric technologies on grounds of the unique nature of human thoughts, memories, and other mental conditions.