Matthew Weigman (born 20 April 1990) is a blind American man who has used his heightened hearing ability to help him deceive telephone operators and fake various in-band phone signals. Before his arrest at the age of 18, Weigman had used this ability to become a well known phone phreaker, memorizing phone numbers by tone and performing uncanny imitations of various phone line operators to perform pranks such as swatting on his rivals.