An optimised sidechain based biometric attendance solution

A Biometric Authentication System (BAS) is the best choice when there is a need for end-users to have a higher level of security and reliability. However, capturing and verifying user biometrics requires dedicated biometric hardware and software systems with complex mechanisms at the back end. Most of the biometric systems are client-server architecture based, which has got the single point of failure, dependability and reliability problems. Capturing, storing and verifying biometric templates must be highly secure and reliable. When a single chain based blockchain system is used at the backend, the computational resources and verification time increase significantly due to its large block chain size. This results in more delays, inefficiencies, and requires transaction gas costs, this shows the need for block chain optimising solutions. For block chain biometric based access control systems, speed, performance, accuracy, and security are the primary requirements. In this work, we present a Side Chain based Blockchain Transaction Optimisation Solution (SBTOS) for a BAS, which is a state-of-the-art mechanism which combines the strength of blockchain and biometric technology with optimised performance for the access control systems. SBTOS mainly focuses on optimising the blockchain when used at the back end, particularly when the database size is huge.