Networks for Monetary Transactions an der TU München
Karteikarten und Zusammenfassungen für Networks for Monetary Transactions an der TU München
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Lerne jetzt mit Karteikarten und Zusammenfassungen für den Kurs Networks for Monetary Transactions an der TU München.
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What is Biometrics authentication?
Biometrics authentication (or realistic authentication) is used in computer science as a form of identification and access control. Biometric identifiers are the distinctive, measurable characteristics used to label and describe individuals and are often categorized as physiological or behaviourial characteristics.
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What are examples of Physiological Biometrics?
- face
- fingerprint
- hand
- iris
- DNA
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What are examples of Behavioral Biometrics?
- keystroke
- signature
- voice
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
Proof of identity differ by their source of attributes and the degree of changeability. True or False?
True
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What are the basic steps of Enrollment in Biometrics?
- User provides biometric data to the system. Record of several images
- Biometric system translates this to a template
- This template is then stored
- Subsequent authentication is done against the template:
- User may be required to enroll several times to get a clean template
- Presentation: process by which a user provides biometric data to an acquisition device
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
A unique template is generated every time a user presents biometric data. True or False?
True
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What is a template in Biometrics?
- Fundamental to biometrics
- A small file derived from the distinctive features of a user's biometric data
- Used to perform biometric matches
- Templates are often vendor specific (depending on the algorithm used by the vendor)
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What is Scoring in Biometrics?
Match decisions between templates based on a score
- Correlation resulting from match between two templates
- Biometric apps use propritary algorithms to generate scores
- Thus biometric systems do not render absolute matches, only probability of match
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
How does Authentication work in Biometrics?
- User provides biometric data to the system
- Biometric system translates this to a template
- The system begins comparing the template to stored templates
- Templates will usually not match exactly
- Instead, the 'closeness' of the matches is given a 'score'
- If the 'score' is above some threshold, user is authenticated
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What are 1:1 systems in Biometrics?
- Acquire 'identification'
- Acquire bio data, simplify to template
- Match template against the template of the users ID in the system
Beispielhafte Karteikarten für Networks for Monetary Transactions an der TU München auf StudySmarter:
What are 1:n systems in Biometrics?
- Acquire bio data, simplify to template
- Match template against all other templates, searching for the highest scoring template
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What are some Security Issues related to Biometrics?
- Privacy: keeping templates safe from unauthorized users
- Security: keeping templates secure so that one cannot be exchanges for another
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