Conclusion

There are two types of biometrics: active and passive. An active biometric device will protect and enhance the user 's privacy. Beyond knowing whether or not a device is privacy-positive, it must also be discerned if it is a good biometric device by using the following quantifiable measurements:

• User acceptance

• Ease of use

• Technology costs

• Deployability

• Invasiveness of the technology

• Maturity of the technology

• Time it takes for the user to become habituated

Of all the quantifiable measurements, user acceptance requires the most analysis. The other quantifiable measures are easy to understand and define. The selection of a biometric device is determined by:

• The intended use of the device

• The types of users

• The location where the users will use the device