All workers at the Olympics site will be screened using new biometric scanners, the Times has reported.
The new security precaution will feature face recognition and palm-print reading. It will affect up to 100,000 workers and could be used during the Games to scan ticket-holders.
Tarique Ghaffur, the Metropolitan police assistant commissioner, announced the plans at a security conference in Abu Dhabi.
Employment unions have raised some concerns about data protection although Mike Fairhurst, a biometrics expert, told the paper the techniques were already being used successfully.
"If it’s implemented in the right way, multi-modal biometrics are more reliable because it’s more of a challenge for people trying to defeat the system," he said.
The UK Borders Bill 2007 has set out a legislative framework for the introduction of biometric ID cards, but is yet to become law.
The Olympic site is a huge mixed development of sporting facilities and commercial properties, which should attract millions of new visitors to the capital.
