===== State of the Art =====
//This chapter provides the reader with the relevant technical-scientific background as well as existing related products and research, also known as the state of the art, in the field(s) of the project.//

==== Introduction ====
//Provide here an overview of the contents (structure) of this chapter.//


These are examples of citations to books [(Thapa2019)] and [(Obayashi2020)], a chapter on a smart companion [(Reis2020)], articles on IoT [(Hamza2023)], blimps [(Mahn2006)], cloud computing [(Llorente2009)], gas emissions [(Ranjith2020)], pedestrian crossing behaviour [(Sobhani2018)], smart bicycles [(Lee2018)] and diaper moisture [(Khan2018)], and to Web resources [(android41)], [(cloudexpo2008)] and [(gartner2021)]. 

==== Domain Overview ====

==== Existing Solutions====

Commercial solutions

Open-source solutions

Research prototypes

//Compare selected solutions considering the requirements of your own solution//
==== Relevant Technologies and Approaches ====
Data sources and acquisition

Data analysis and modelling techniques

Data visualisation techniques

UI/UX approaches

Development technologies

==== Gap Analysis ====

Summary of limitations of existing solutions

Identified opportunity

Positioning of the proposed solution

==== Design Implications ====

==== Summary ====
//Provide here the conclusions of this chapter and make the bridge to the next chapter.//

What did the you learn from the state of the art and how did it influence the proposed solution?