Turing has been officially pardoned by Elizabeth II under the little-known Royal Prerogative of Mercy.

We in consideration of circumstances humbly represented unto us, are graciously pleased to extend our grace and mercy unto the said and to grant him our free pardon posthumously in respect of the said convictions,” reads the Queen’s pardon in 2013.

The pardon comes after a change of heart by British government, which had previously insisted that Turing was properly convicted of what at the time was a criminal offense.

Turing, who was gay, was criminally prosecuted under Britain’s 1885 Criminal Law Amendment Act that criminalized homosexual activity and led to the convictions of over 49,000 British men, including Oscar Wilde.

Source/Bron: BBC.co.uk.; Pic; Alan Turing