# beamer+biblatex: change the \footnotemark style of \footcite

Is it possible to change the \footnotemark style created by \footcite (from biblatex) so that it looks more like a citation symbol?

I want to keep my references as footnotes, but I would like them to look more like actual citations.

MWE:

% arara: pdflatex
% arara: bibtex
% arara: pdflatex
% arara: pdflatex
% arara: clean: {files:[temp.aux, temp.bbl, temp.bib, temp.blg, temp.log, temp.nav, temp.out, temp.run.xml, temp.snm, temp.toc, temp-blx.bib]}

\documentclass{beamer}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
title   = "The {C}omprehensive {T}ex {A}rchive {N}etwork ({CTAN})",
year    = "1993",
journal = "TUGBoat",
volume  = "14",
number  = "3",
pages   = "342--351"
}
@book{goossens93,
author    = "Michel Goossens and Frank Mittelbach and Alexander Samarin",
title     = "The LaTeX Companion",
year      = "1993",
}
\end{filecontents}

\usepackage[english]{babel}
\usepackage[backend=bibtex, style=verbose]{biblatex}

\begin{document}

\begin{frame}
Bla bla bla \footcite{greenwade93} Ble ble ble \footcite{goossens93}
\end{frame}

\end{document}


NOTE 1: There are many questions on tex.stackexchange.com about changing the style of the footnote style. This is about the footnotemark itself.

NOTE 2: I don't use footnotes for anything else, so I don't mind changing the footnotemark directly, ignoring whether it was created by footcite or not. I just could not find how to customize footnotemarks this way...

• While it is certainly possible to change the style I wonder why you want to confuse your readers by going against the tradition. I would never expect a [1] to point to a footnote. – Ulrike Fischer May 5 '16 at 17:35
• @UlrikeFischer But on the other hand [1] is in many styles a traditional mark for a reference – samcarter_is_at_topanswers.xyz May 6 '16 at 10:49
• I find using the regular footnote mark is also confusing because it is strange to see a footnote symbol and then see a reference below. I have just tried @samcarter's solution and the slides look more intuitive: the viewer knows that a paper reference is being used, and he can easily see that references are being shown in the bottom (and will be shown in the end as well, as usual). – Ricardo Cruz May 6 '16 at 10:50

As you don't use footnotes for anything else, you can modify \@makefnmark (this is what \insertfootnotemark calls)

% arara: pdflatex
% arara: bibtex
% arara: pdflatex
% arara: pdflatex
% arara: clean: {files:[temp.aux, temp.bbl, temp.bib, temp.blg, temp.log, temp.nav, temp.out, temp.run.xml, temp.snm, temp.toc, temp-blx.bib]}

\documentclass{beamer}

\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
title   = "The {C}omprehensive {T}ex {A}rchive {N}etwork ({CTAN})",
year    = "1993",
journal = "TUGBoat",
volume  = "14",
number  = "3",
pages   = "342--351"
}
@book{goossens93,
author    = "Michel Goossens and Frank Mittelbach and Alexander Samarin",
title     = "The LaTeX Companion",
year      = "1993",
}
\end{filecontents}

\usepackage[english]{babel}
\usepackage[backend=bibtex, style=verbose]{biblatex}

\makeatletter
\def\@makefnmark{\hbox{{{\usebeamercolor[fg]{footnote mark}\usebeamerfont*{footnote mark} [\@thefnmark]}}}}

\def\@makefntext#1{%
\def\insertfootnotetext{ #1}%
\def\insertfootnotemark{\@makefnmark}%
\usebeamertemplate***{footnote}}
\makeatother

\begin{document}

\begin{frame}
Bla bla bla \footcite{greenwade93} Ble ble ble \footcite{goossens93}
\end{frame}

\end{document}