Summarizing the operation of a biometric system
A biometric system validates the identity or authenticity of an individual, by comparing the physiological or behavioral characteristics against a stored template. The process can be performed by either of the following:
- A person: Comparing the characteristics using a manual method
- A machine: Comparing the characteristics using an automated method
Today, much of the work in biometric identification and authentication is done using automation. Most systems have a common sequence of events. The process begins at the user interface, then the system acquires the image, prepares the image for comparison, determines if there is a match, and then presents the results.
The basic process is outlined in the following diagram:
Figure 3.4 – Basic operation of a biometric system
Let's take a look at each step, starting with the user interface.
