In this chapter, we introduced and discussed collecting and using biometric data in a biometric authentication solution, how such a solution works as well as feature extraction (in regard to biometric data solutions) was the idea of multimodal fusion. Finally, we expanded the expression detection and analysis solution from Chapter 8, Creating a Facial Expression Platform on IBM Cloud, again using the IBM Watson Visual Recognition service, to create a working biometric authentication solution proof of concept.

The next chapter concludes this book with an overview of what we have covered. The chapter will also shed some light on some of the practical considerations related to developing machine learning systems on the cloud with IBM Watson Studio.