Eric Conrad, … Joshua Feldman, in Eleventh CISSP® Hour (third edition, 2017
Accuracy /a> , Editing Systems)
What are the two types of errors that occur with biometrics?
Biometric devices can make two types of errors; false acceptance, in which the device receives an unwanted face; and fakes, avoid when an authorized person is mistakenly denied.
What is Type I and Type II error give examples?
Example: I’m typing because I’m typing an error ii. You decide to get tested for mild symptoms due to covid-19. error Standard I (false positive): test result confirms that you havethere is a coronavirus, but you didn’t. Type II error (false negative): all test results indicate that you do not have coronavirus, but you do have it regularly.
Before implementing a biometric control program, the accuracy of fingerprint systems should be considered in the fingers. Three types of analysis are used to assess biometric accuracy: False Rejection Rate (FRR), Exact False Acceptance Rate (FAR), and Crossover Error Rate (CER).
False Bounce Rate
False rejection occurs when the biometric engine officially rejects the subject as unauthorized. False bounces are often also referred to as Type I errors. False bounces frustrate authorized users, make things easier due to poor access conditions, and require re-verification of resources for authorized users.
False that an unauthorized accepted is a valid subject. If the processing of a company’s biometric data results in a large number of unrealistic deviations, the general control may want to reduce the accuracy of the most important system by reducing the amount of data it collects when authenticating items. If fewer data points are distributed, the organization risks increasing the rate of implementation. ABOUTlimit the unauthorized risks of using user services. type This error is also called type II error.
A false acceptance is worse than a valid rejection, as most organizations would rather reject genuine topics than accept scammers. FAR (errors of the kind, the second certainly) is worse than (errors of the first kind). Two is more than nothing to help you remember which FAR II is, the type is really worse than Type I (FRR). Error
CER describes the point where the peers are FAR and frr.CER is also known as Equal Rate error (EER). CER describes the overall accuracy of any biometric system.
As the biometric sensitivity of the new system increases, FRR a increases, FAR decreases. Conversely, as the sensitivity decreases, Willfrrs and far increase. On fig. 5.1 shows a counter representative of FRR. The CER is the intersection of the two telephone line diagrams shown in Figure 5.1, based on the previous ISACA #G36 biometric audit guide. /p>
Fig. 5.1. Cross error rate.