\DocumentMetadata{tagging = on}
\documentclass{ltx-talk}

\EditInstance{footer}{std}{
  background-color = black!50,
  color            = black!25,
  separator        = \hfill|\hfill,
  element-order    = {date, author, title, institute, framenumber},
  right-hspace       = 3mm,
  left-hspace        = 3mm,
}

\author{Author Name}
\title{Presentation Title}
\institute{Interesting Conference}

\begin{document}

\begin{frame}
  \maketitle[framestyle = wallpaper, horizontal-alignment = left]
\end{frame}

\begin{frame}
  content
\end{frame}

\end{document}