Cant is a secret language that was historically used by travelling families in Perthshire, Scotland. The language, known as Perthshire Cant, was used to communicate secretly and maintain a separate identity from the local community. However, the traditional travelling lifestyle has declined and fewer families now travel, contributing to the decline of the Cant language. Today, Sheila Stewart is considered the last speaker of the Perthshire Cant, preserving remnants of the secret language and culture before it dies out completely.