Enrollment Limitations

The question of maximum limits on user enrollment can be critical to large-scale systems. Limitations differ for verification and identification systems. Certain types of verification systems have no limits on potential growth. In a 1:1 system wherein matching takes place on a local PC or biometric reader, there is effectively no restriction on the number of users a system might incorporate. Spain enrolled millions of users in its TASS program, allowing users to access government-related health and social security forms from fingerprint enabled kiosks. 1:1 systems in which matching takes place at a central server are more limited - there are few examples of central-matching deployments over 1,000 users. If a large number of authentication events are taking place at the same time, a possibility in a network access environment, the response time from the central verification server may be inadequate to meet user expectations. Biometric vendors have developed products capable of performing verification across multiple servers to address this issue. 

 

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