Teutonic psychic perception filter
From Tardis Wiki, the free Doctor Who reference
When the Spy Master chased the Thirteenth Doctor and Ada Lovelace to 1943 Paris, he set himself up as German officer using a Teutonic psychic perception filter to hide his non-Aryan appearance from the Nazis. However, the Doctor had Noor Inayat Khan leak information to the Nazis of the Master being a double agent, and, as they came to arrest him, deactivated the perception filter to ensure his capture while she stole his TARDIS. (TV: Spyfall)
