The Government trials in 2005 involved 10,000 volunteers, with the detailed research focusing on 2,000 "quota" people chosen to match the general population and 750 disabled people.
- Facial scans worked for only 69% of the quota group and 48% of disabled volunteers.
- Fingerprints worked for 81% of quota group and 80% of disabled people.
- Iris scans worked for 96% of "quota" volunteers and 91% of the disabled group.
Source: No2ID and BBC (May 2005).