Press ReleaseContact UsFAQDownloadSupportProductCompany ProfileBiometrics FAQs Home © 2007 WYSE Biometrics Systems Pvt. Ltd. All Rights ReservedGenerally, yes. This applies for false acceptance rate (FAR) as well as for false rejection rate (FRR). We experience this in our everyday lives -- some faces are easy to recognize and remember, whereas others are difficult. Therefore, the means of FAR and FRR, typical indicators, are not very helpful for individual users. This dependence on the individual user is also responsible for the fact that statistical properties of FAR and FRR measurements are very difficult to quantify.11. Is fingerprint device performance depended on the user?The FNMR is the rate at which authorized people are falsely not recognized during feature comparison. In contrast to the FRR, attempts previously rejected due to poor (image) quality (Failure to Acquire, FTA) are not accounted for. Whether a falsely recognized feature leads to increases in FAR or FRR depends upon the application.False Match Rate (FMR)The FMR is the rate which non-authorized people are falsely recognized during the feature comparison. In contrast to the FAR, attempts previously rejected due to poor (image) quality (Failure to Acquire, FTA) are not accounted for. Whether a falsely recognized feature leads to an increase in FAR or FRR depends upon the application. (There are applications that define a successful recognition as a rejection, when, for example, double release of identification cards for a person with a false identity is prevented by comparing the actual reference features with the centrally stored reference features of all cards released so far.) False Match Rate (FMR)The False Identification Rate is the probability in an identification that the biometric feature is falsely assigned to a reference. The exact definition depends on the assignment strategy; namely, after feature comparison, often more than one reference will exceed the decision threshold.False Identification Rate (FIR) Those who are enrolled yet are mistakenly rejected after many verification / identification attempts count for the Failure To Acquire (FTA) rate. FTA can originate through temporarily not measurable features ("bandage", non-sufficient sensor image quality, etc.). The FTA usually is considered within the FRR and need not be calculated separately. (See also FNMR and FMR)For further details please contact sales@wyse.co.in The FER is the proportion of people who fail to be enrolled successfully. FER is a non-stationary statistical quantity which does not only show a strong personal correlation, it can even be determined for each individual feature (called personal FER). Failure To Enroll rate (FTE, also FER) The FRR is the frequency that an authorized person is rejected access. FRR is generally thought of as a comfort criteria, because a false rejection is most of all annoying. FRR is a non-stationary statistical quantity which does not only show a strong personal correlation, it can even be determined for each individual feature (called personal FRR).False Rejection Rate (FRR) The FAR is the frequency that a non authorized person is accepted as authorized. Because a false acceptance can often lead to damages, FAR is generally a security relevant measure. FAR is a non-stationary statistical quantity which does not only show a personal correlation, it can even be determined for each individual feature (called personal FAR).False Acceptance Rate (FAR) 12. In biometrics parlance, what does FAR, FRR, FTE / FER, FIR mean?Please refer the accompanying Programmer’s Manual.11. How do I store fingerprints in the database?* excessive dry or wet finger * angel * clarity* angel The following factors affect the enrollment process:10. What are the factors affecting Enrollment? Verification: During an authentication, a new scanning of the biometrics feature is required. This time it is not saved; instead, it is compared to the reference feature i.e. enrolled fingerprint. If the comparison is positive, access to the appropriate applications can be granted. A prerequisite for authentication is good enrollment, in which a biometrics feature is saved as a personal reference centrally in a database. Since the quality of the enrollment essentially determines the performance of the authentication, it must be implemented carefully. It is obvious that enrollment must take place in a secure environment. 9. How do I enroll? Enrollment process is the most important part of the fingerprint authentication system. This process has to be done very carefully so that a good quality fingerprint image is stored. This process needs the person to place his / her finger on the sensor so that the maximum area of the finger is covered.YES... The grey scale image of fingerprint can be viewed.8. Can I view the fingerprint image?The fingerprint image will be stored in the form of bytes. It will not be an image as it does not scan the image.7. How do I install the Device Drivers?The fingerprint image will be stored in the form of bytes. It will not be an image as it does not scan the image.6. How will the fingerprint image be stored?Optical based devices are immune to Electro Static Discharge (ESD) 7. Even Greasy, Muddy, Oily, soiled, and tainted fingers can be detected.6. Capacitance based sensors have a hard coating which withstands severe scratches, abrasion and chemical exposures. 5. The fingerprint will be retrieved as 1:1 image size and is not magnified or reduced.4. Capacitance based solutions will produce a clean image unlike optical solutions which produce edges of the image as the sensors only focus towards a small area.3. It is immune to ambient light and gives high quality image in any type of light conditions. 2. Capacitance sensors are small and thin and are easy to integrate with OEM devices.1. Capacitance based solutions will not compromise by a simple photocopy of a fingerprint or prosthesis, as it requires a live finger. The capacitance based fingerprint sensor overcomes some drawbacks of optical based scanners such as: - There are two types of fingerprint authentication techniques, mainly optical based and capacitance based.The biometrics technique uses five different methods. They are: Iris recognition, Hand geometry, Face recognition, Digital signature, Fingerprint recognition. Out of the 5, the fingerprint authentication method is the most reliable and cost effective, and hence is mostly used. Biometrics is the science of measuring an individual's physical properties. By determining an individual's physical features in an authentication inquiry and comparing this data with others' biometric data, identification for a specific user can be determined and authentication for access can be granted.5. Why is Capacitance based technique more powerful than Optical based techniques? 4. How many types of Fingerprint authentication techniques are available?3. Why is only fingerprint authentication mostly used?Advantages of Optical Device: - This is a Universal Serial Bus port available on the PC.2. What is Biometrics?1. What is an USB portBiometrics FAQs