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Add text for HTML5 Web Storage

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Tobias Eidelpes 2020-02-27 15:27:44 +01:00
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chapters/methods.tex
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@ -530,7 +530,25 @@ have not implemented Global Storage.
Local Storage does, however, obey the same-origin policy by only allowing the
originating domain access to its name-value pairs. Every website has their own
separate storage area which maintains a clear separation of concerns.
separate storage area which maintains a clear separation of concerns. Local
Storage lends itself for different use cases. Especially applications that
should function even when no internet connection exists can use Local Storage to
enable that functionality. Coupled with file-based \glspl{API}, which are
generally not limited in storage (except by the available disk space), offering
the full range of features in offline-mode is feasible.
The third category of HTML5 Web Storage is similar to Local Storage, but
requires that the stored data be deleted after a session is closed. While
content that is persisted by Local Storage, must be deleted explicitly by the
user, Session Storage has the intended function of providing non-persistent
storage.
HTML5 Web Storage can be used for tracking in the same way that cookies are
used: by storing unique identifiers which are read on subsequent visits.
\citeauthor{ayensonFlashCookiesPrivacy2011}
\cite{ayensonFlashCookiesPrivacy2011} found that 17 of the top 100 web sites
used HTML5 Web Storage with some of them using it for cookie respawing (see
section~\ref{subsec:evercookie}).
\subsection{HTML5 Indexed Database API}
\label{subsec:html5 indexed database api}