Francois Chastanet is an architect, graphic and type designer interested in written signs in public space, from wayfinding typography to ephemeral handwritings. As a documentary author, he writes on urban epigraphy and the evolution of the Latin letter in the 20th and 21st centuries. Other books by Chastanet include Pixacao: Sao Paulo Signature (2007) and Dishu: Ground Calligraphy in China (2013).