Griffin also marketed a controversial facial recognition system that used computer software to compare gamblers' faces against several volumes of mug shots.
Beverly S. Griffin, the firm's co-founder and co-owner, estimates as many as half of Southern Nevada's casinos now use biometric technology to identify the faces of card cheats or other undesirables.
[5] The Las Vegas Sun reported on September 13, 2005 that Griffin Investigations had filed for Chapter 11 bankruptcy protection in light of legal costs and damages from a successful defamation lawsuit against the company.
[6] The lawsuit had been brought by two gamblers, Michael Russo and James Grosjean, claiming they had been improperly detained, labeled as cheaters and arrested, on the basis of information supplied by Griffin.
[7] According to the minutes of the Private Investigators Licensing Board for 18 June 2008, Beverly Griffin said that her ex-husband had retired, and she was seeking to purchase his half of the business.