Pervasive computing, also called ubiquitous computing or UbiComp (Hansmann, 2003), is the growing trend to embed microprocessors in everyday objects and activities so that they can communicate information (Rouse, 2016). The Internet of Things (IoT) is a related term. It is based on the concept of what happens when computers move away from the desktop and become immersed in the surrounding environment, as illustrated in Figure 2.1 (Vasseur and Dunkels, 2010). Pervasive computing: a vision of the future of computers. https://s3-euw1-ap-pe-df-pch-content-public-u.s3.eu-west-1.amazonaws.com/9780429455759/e2f4c0ec-c6ea-42ed-81a5-375a66d5e96a/content/fig2_1_B.tif"/> (From Vasseur, J.P. and Dunkels, A., Interconnecting Smart Objects with IP. The Next Internet, Morgan Kaufmann Publishers is an Imprint of Elsevier, Amsterdam, the Netherlands, 2010.)