professor sir alistair lyall , my pioneering discovery revolutionised police investigation techniques , asked the guardian newspaper innocent people were being " branded as criminals " because the system retained images of persons arrested , regardless of whether they were later convicted . the government now keeps more than twenty million profiles , up 1 . 4 million in four years . father alec then called for improved genetic testing procedures , warning that the current version could factor in a miscarriage of justice , in an interview with the news columnist .
Alec Jeffreys is the inventor of genetic fingerprinting.