Turing was born in London in 1912, he attended Sherborne School in Dorset and then, later, King's College Cambridge and Princeton University in the USA. He studied Cryptanalysis · Computer science · Mathematics. He worked on standards for
- machines to be called intelligent. The same principle is used today in online CAPTCHA tests, which determine whether a user is a person or a machine. He died 07 June 1954 at the age of 41.