**Author details**

Stelios C.A. Thomopoulos

Integrated Systems Laboratory, Institute of Informatics and Telecommunications, National Center for Scientific Research "Demokritos", Greece

\*Address all correspondence to: scat@iit.demokritos.gr

© 2021 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
