\chapter{Related Work} \mainlabel{related_work} \chaptertoc \section{Wearable Haptics} \subsection{The Sense of Touch} \subsection{Wearable Haptic Devices} \subsection{Vibrotactile Renderings} \subsubsection{Contact Renderings} \subsubsection{Texture Renderings} \section{Augmented Reality} \subsection{Principles, Capabilities and Limitations} \subsection{Interacting with Virtual and Augmented Content} \subsubsection{Virtual Hand Rendering in AR} \section{Visuo-Haptic Augmented Reality} \subsection{Altering the Perceptions} \subsection{Improving the Interactions} \section{Conclusion}