Different technologies may be appropriate for different applications, depending on perceived user profiles, the need to interface with other systems or databases, environmental conditions and a host of other application-specific parameters. Biometrics has some drawbacks and loopholes. Some of the problems associated with biometrics systems are as follows:
• Most of the technologies work well only for a “small” target population.
• The level of public concern about privacy and security is still high.
• Biometric technologies do not fit well in remote systems. Biometric systems do not handle failure well.
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