Beamer citation in footnote

Question

What I want: A bibliography printing style in Beamer, which combines \footpartcite with \autocite. The first instance of citation of an item will be like this:

All the subsequent instances will not have any description in footnote (but it will link to the first instance):

What I have: With my MWE (see below) I am able to get this for the first instance (notice the footnotemarks):

Any help is welcome.

Update: I also have some \footnotes which I want unchanged (see the following image).

\documentclass{beamer}
\usepackage[style=numeric]{biblatex} 

\usepackage{filecontents}
\begin{filecontents*}{myreferences.bib}
    @online{bad,
        author = {Bad Man},
        year = {1313},
        title = {Bad Title},
        url = {http://badurl.com/},
    }
\end{filecontents*}
\addbibresource{myreferences.bib}

%https://tex.stackexchange.com/a/165016/38244
\hypersetup{
    colorlinks,
    citecolor=red,
    linkcolor=blue,
    %   backref=true
}


% https://tex.stackexchange.com/a/29931/38244
\DeclareCiteCommand{\footpartcite}[\mkbibfootnote]
{\usebibmacro{prenote}}%
{\usebibmacro{citeindex}%
    \mkbibbrackets{\usebibmacro{cite}}%
    \setunit{\addnbspace}
    \printnames{labelname}%
    \setunit{\labelnamepunct}
    \printfield[citetitle]{title}%
    \newunit
    \printfield[]{year}}
{\addsemicolon\space}
{\usebibmacro{postnote}}

%%%\DeclareMultiCiteCommand{\footpartcites}[\mkbibfootnote]{\footpartcite}{\addsemicolon\space}

\begin{document}

    \begin{frame}{What I found}
    Something\footnote{This is a footnote with index 1}

    First time, \autocite{bad} \footpartcite{bad}   

    Another thing\footnote{This footnote index should be 2}
\end{frame}

\begin{frame}{Again}
Next time, \autocite{bad} only
\end{frame}

\end{document}

UPDATE (2) One elegant (yet partial) solution is given by samcarter (see below). The only thing left is to link the citations to the first footnote.

Answer 1

As a quick hack, simply change the definition of the footnotemarks to be empty.

\documentclass{beamer}
\usepackage[style=numeric]{biblatex} 

\usepackage{filecontents}
\begin{filecontents*}{myreferences.bib}
    @online{bad,
        author = {{Bad Man}},
        year = {1313},
        title = {Bad Title},
        url = {http://badurl.com/},
    }
\end{filecontents*}
\addbibresource{myreferences.bib}

%https://tex.stackexchange.com/a/165016/38244
\hypersetup{
    colorlinks,
    citecolor=red,
    linkcolor=blue,
%   backref=true
}


% https://tex.stackexchange.com/a/29931/38244
\DeclareCiteCommand{\footpartcite}[\mkbibfootnote]
{\usebibmacro{prenote}}%
{\usebibmacro{citeindex}%
    \mkbibbrackets{\usebibmacro{cite}}%
    \setunit{\addnbspace}
    \printnames{labelname}%
    \setunit{\labelnamepunct}
    \printfield[citetitle]{title}%
    \newunit
    \printfield[]{year}}
{\addsemicolon\space}
{\usebibmacro{postnote}}

%%%\DeclareMultiCiteCommand{\footpartcites}[\mkbibfootnote]{\footpartcite}{\addsemicolon\space}

\setbeamertemplate{footnote}{\insertfootnotetext}

\makeatletter
\def\@makefnmark{}
\makeatother

\begin{document}

\begin{frame}{What I found}
    First time, \autocite{bad} \footpartcite{bad}   
\end{frame}

\begin{frame}{Again}
    Next time, \autocite{bad} only
\end{frame}

\end{document}

---

And in combination with footnotes (with a little help from https://tex.stackexchange.com/a/170512/36296):

\documentclass{beamer}
\usepackage[style=numeric,citecounter=true,citetracker=true]{biblatex} 
\usepackage{filecontents}
\begin{filecontents*}{myreferences.bib}
    @online{bad,
        author = {{Bad Man}},
        year = {1313},
        title = {Bad Title},
        url = {http://badurl.com/},
    }
\end{filecontents*}
\addbibresource{myreferences.bib}

%https://tex.stackexchange.com/a/165016/38244
\hypersetup{
    colorlinks,
    citecolor=red,
    linkcolor=blue,
%   backref=true
}

\let\svthefootnote\thefootnote

% https://tex.stackexchange.com/a/29931/38244
\DeclareCiteCommand{\cite}
{\usebibmacro{prenote}}%
{%  
    \ifciteseen{}{%
        \usebibmacro{citeindex}%
        \let\thefootnote\relax%
        \footnotetext{%
            \mkbibbrackets{\usebibmacro{cite}}%
            \setunit{\addnbspace}
            \printnames{labelname}%
            \setunit{\labelnamepunct}
            \printfield[citetitle]{title}%
            \newunit%
            \printfield[]{year}%
        }%
        \let\thefootnote\svthefootnote%
    }%
    \autocite{\thefield{entrykey}}%
  }
{\addsemicolon\space}
{\usebibmacro{postnote}}

\begin{document}

\begin{frame}{What I found}
    test\footnote{test}

    First time, \cite{bad}   

    test\footnote{test}
\end{frame}

\begin{frame}{Again}
    Next time, \cite{bad} only
\end{frame}

\end{document}

Answer 2

All that seems to be missing is a \blx@anchor in the footnotetext. In order to be able to use that \makeatletter and \makeatother are required. And I have added another test slide in the beginning to show that it does not link to the first slide anymore. Apart from that it's exactly samcarter's answer.

\documentclass{beamer}
\usepackage[style=numeric,citecounter=true,citetracker=true]{biblatex} 
\usepackage{filecontents}
\begin{filecontents*}{myreferences.bib}
    @online{bad,
        author = {{Bad Man}},
        year = {1313},
        title = {Bad Title},
        url = {http://badurl.com/},
    }
\end{filecontents*}
\addbibresource{myreferences.bib}

%https://tex.stackexchange.com/a/165016/38244
\hypersetup{
    colorlinks,
    citecolor=red,
    linkcolor=blue,
%   backref=true
}

\let\svthefootnote\thefootnote

\makeatletter
% https://tex.stackexchange.com/a/29931/38244
\DeclareCiteCommand{\cite}
{\usebibmacro{prenote}}%
{%  
    \ifciteseen{}{%
        \usebibmacro{citeindex}%
        \let\thefootnote\relax%
        \footnotetext{%
            \blx@anchor
            \mkbibbrackets{\usebibmacro{cite}}%
            \setunit{\addnbspace}
            \printnames{labelname}%
            \setunit{\labelnamepunct}
            \printfield[citetitle]{title}%
            \newunit%
            \printfield[]{year}%
        }%
        \let\thefootnote\svthefootnote%
    }%
    \autocite{\thefield{entrykey}}%
  }
{\addsemicolon\space}
{\usebibmacro{postnote}}
\makeatother

\begin{document}

\begin{frame}{Test}
    content
\end{frame}

\begin{frame}{What I found}
    test\footnote{test}

    First time, \cite{bad}   

    test\footnote{test}
\end{frame}

\begin{frame}{Again}
    Next time, \cite{bad} only
\end{frame}

\end{document}