Every player, employee and press member at the Wimbledon tennis tournament is being checked against a police database as part of tightened security.
Sniffer dogs are also being used as part of the security measures
The hi-tech passes, which were issued to more than 4,000 people, are scanned by security staff at the entry gates.
The person's identity is confirmed and cross-checked against a police system.
Officials said it was designed to make it even more difficult for terrorists, criminals and even stalkers to infiltrate the championships.
Daily court checks
The move, which applies to all staff for the first time this year, is part of a package of security improvements.
The system works to ensure potential criminals cannot enter the grounds using colleagues' passes.
Police said last year thieves who stole thousands of pounds worth of champagne had links to a contract supplier.
Sniffer dogs are also being used to check the courts each morning and visitors are being randomly stopped and searched.
Paul Figgins, of IBM Global Services, said the high-tech entry system confirms the identity of contractors and other staff.
He said: "It is being used for all staff, press, players and other badge holders for the first time this year."