How to sell your self for a song
Of those taking part 92% revealed details such as mother's maiden name, first school and birth date.
The detailed personal information was gathered by market researchers who asked the questions as part of a fake survey on theatre-going habits.
Dangling the chance to win free tickets was enough to make people surrender everything needed to impersonate them.
During the course of the survey many people freely volunteered key details such as name, address and postcode.
To elicit other details the questions asked by the market researchers were cleverly put together to make people hand over personal information.