Elegant business card template including QR code for a MeCard, and space for a GPG key fingerprint
\documentclass[11pt,a4paper]{memoir}
\setstocksize{55mm}{85mm} % UK Stock size
\setpagecc{55mm}{85mm}{*}
\settypeblocksize{45mm}{75mm}{*}
\setulmargins{5mm}{*}{*}
\setlrmargins{5mm}{*}{*}
\usepackage{xcolor}
\setheadfoot{0.1pt}{0.1pt}
\setheaderspaces{1pt}{*}{*}
\usepackage{fontspec}
\setmainfont[]{EBGaramond12-Regular.ttf}
\checkandfixthelayout[fixed]
\pagestyle{empty}
\usepackage{pstricks}
\usepackage{auto-pst-pdf,pst-barcode}
\begin{document}
\begin{Spacing}{0.75}%
\noindent
\textbf{Helena Doe}\\
\tiny subtitle \hfill {\color{gray}Division / Employer}\\
\rule{74mm}{.3mm}\\
\begin{minipage}[t]{33mm}
\vspace{-0mm}%
\begin{pspicture}(25mm,25mm)
% The MECARD format is used to exchange contact information. More information at:
% http://www.nttdocomo.co.jp/english/service/imode/make/content/barcode/function/application/addressbook/index.html
\psbarcode{MECARD:N:Last name, First Name;URL:https://fqdn;EMAIL:helena@univ.edu;NOTE:GPG: ;;}{eclevel=L width=1 height=1}{qrcode}
\end{pspicture}
\end{minipage}
\hspace{1mm}
\begin{minipage}[t]{42mm}
\vspace{-0mm}%
\begin{flushleft}
{\scriptsize
\begin{Spacing}{1}%
\textbf{Job Title}\\
\hspace{5mm}Speciality 1\\
\hspace{5mm}Speciality 2\\
\hspace{5mm}Speciality 3 \vspace{2mm}\\
\end{Spacing}
}
{\tiny
\begin{tabular}{rl}
{\color{gray}web} & https://fqdn/\\
{\color{gray}email} & helena@univ.edu\\
{\color{gray}email} & hxr42@gmail.com\\
{\color{gray}mobile} & +1 123 456 7890\\
\end{tabular}
\vspace*{2mm}
}
\end{flushleft}
\end{minipage}
\rule{74mm}{0mm}\\
\texttt{\fontsize{2.84mm}{3.55mm}\selectfont 425B 030A B8D2 0316 CA1B 4709 CA83 5DDA EC31 CA56} % GPG KEY ID
\end{Spacing}
\end{document}