A Configurable Multibiometric System for Authentication at Different Security Levels Using Mobile Devices

This work presents a configurable multibiometricsystem oriented to mobile devices which combines face, handand in-air signature biometrics to provide three different levelsof security. The number of traits involved in the authenticationincreases with the security strength, allowing the balance betweencomfort and accuracy according to the security requirements ofthe final application. In addition, the security of the system isenhanced by incorporating anti-coercion and aliveness detectionmechanisms. To decide which biometric mode should be requestedat each security level, an evaluation of the biometrics has beenperformed in terms of performance and users acceptability.