Structural design patterns are concerned with how classes and objects can be composed, to form larger structures. They enable you to create systems without rewriting or customizing the code because these patterns provide the system with enhanced reusability and robust functionality.
Each pattern describes a problem which occurs over and over again in our environment, and then describes the core of the solution to that problem, in such a way that you can use this solution a million times over, without ever doing it the same way twice. —Christopher Alexander
There are following 10 types of structural design patterns.
Thanks to the quick advance in technology, especially in computer science and electronics. Nowadays, facial recognition is becoming the second most largely deployed biometric authentication method at the world level in terms of market quota right after fingerprints. Each day more and more manufacturers are including face recognition in their products, such as Apple with its Face-ID technology, the banks with the implementation of eKYC solutions for the onboarding process.
Contrary to the main aim of research in face recognition has been given to the improvement of the performance at the verification and identification tasks, the security vulnerabilities of face recognition systems have been much less studied in the past, and only over the recent few years, some attention has been given to detecting different types of attacks consists of detecting whether a biometric trait comes from a living person or it is a fake. …
Biometric has been for long the target of future authentication that expected that biometric authentication will largely displace other means of our current authentication and access control. Biometric systems can be used in two distinct modes as follows.