Brain Scanning is the most common power among supernaturals. With this power, they can see through someone else's forehead and catch a glance of their brain patterns. This power serves as a way of determining another individual's species.
However, while they can recognize the brain patterns, some people give off a blockage that make them difficult to read. Chameleons are known to have a closed mind until they come of age where they start manifesting their powers; individuals with ghost whispering powers can also give off an unintentional mental blockage.