Tongue is now capable of both tasting chemical input and processing heat signatures Chemical input is limited; he can taste but not interpret unless it's something obvious like sulfur or chlorine that has a distinct scent. The most he can glean is wheather something is safe or harmful based on whether the taste is good or bad. Heat signatures take concentration to read and appear as a momentary color overlay on his vision that fades off after a few seconds.
Fourth Change (6/06/16)