\chapter{Personas \& Use Cases}
This chapter describes the personas and use cases that then are further used in the requirements in \autoref{chapter:requirements}.

\section{Sender}
The sender regulary transmits small pieces of data (e.g. the current timestamp) via a website by controlling the magnetic field of the CPU in the browser using client side code. 

\section{Receiver}
The receiver visits the website provided by the sender using a laptop. He uses an application on his smartphone to receive and display the data the sender transmits by putting his smartphone on top of the laptop.

\begin{figure}[h]
    \centering
    \includegraphics[width=0.9\textwidth]{use_cases.png}
    \caption{Use Case Diagram}
    \label{figure:use_cases}
\end{figure}