Selectively removing footnote number with footcite in beamer

Question

My question is identical to this one, which asks how to remove footnote numbers from the footcite command within Beamer. The accepted answer, which is the command

\makeatletter
\def\@makefnmark{}
\makeatletter

removes the numbering completely. I would like to be able to remove the numbering selectively, and show the numbers on some slides while hiding it on others. How can I accomplish this?

Answer 1

If you make the modifications inside a group, only the frames in this group will be effected:

\documentclass{beamer}
\usepackage[backend=biber,style=verbose]{biblatex}
\addbibresource{biblatex-examples.bib}
\usetheme{Boadilla}
\begin{document}
\begin{frame}
\frametitle{First Frame \footcite{sigfridsson}}
Some text.
\end{frame}
\begingroup
  \makeatletter
  \def@makefnmark{}
  \makeatletter
  \setbeamertemplate{footnote}{%
    \parindent 1em\noindent
    \raggedright
    \insertfootnotetext\par
  }
\begin{frame}
  \frametitle{Second Frame}
  Some more text.
  \footcite{worman}
  \end{frame}
\endgroup
\begin{frame}
\frametitle{First Frame \footcite{sigfridsson}}
Some text.
\end{frame}
\begin{frame}[allowframebreaks]
\frametitle<presentation>{References}
\printbibliography
\end{frame}
\end{document}