This TeX code generates a series of ID cards with QR codes for your conference assistants. You will need to add your own background image (fondoTarjeta).

IDcardswithQRcodes.tex

\documentclass[a4paper,12pt]{article}
\usepackage[english,spanish]{babel}
\usepackage[utf8]{inputenc}

%Load layout and data packages
\usepackage{fullpage}
\usepackage{filecontents}
\usepackage{csvtools}
\usepackage{eso-pic}
\usepackage{graphicx}
\usepackage{fix-cm}
%%Load packages for generating QR codes
\usepackage{pstricks}
\usepackage{pst-barcode}

\pagestyle{empty}

\setlength{\oddsidemargin}{-15mm}

%%Define a layout including some ID cards for each A4 page
\AddToShipoutPicture{
   \setlength\unitlength{1mm}
    \put(10.5,214){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
   \put(103.5,214){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
    \put(10.5,156.5){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
   \put(103.5,156.5){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
    \put(10.5,98.5){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
   \put(103.5,98.5){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
     \put(10.5,41){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
    \put(103.5,41){\includegraphics[width=92.5mm,keepaspectratio=true]{Logos/fondoTarjeta}}
}

%%Load data from a csv file (you could load it from a file or a remote database).
\begin{filecontents*}{names.csv}
Name,LastName,Affiliation,qrName,qrLastName,qrAffiliation,qrPhone,qrEmail,qrUrl, qrNote
Benito,Zaragozí,Universidad de Alicante,Benito Manuel,Zaragozi Zaragozi,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
Beni,Zaragozí,GIS and Chips,Benito Manuel,Zaragozi Zaragozi,GISAndChips,+34965903945,benizar@gmail.com,www.gisandchips.org,Miembro de GIS and Chips
Alfredo,Ramón,Universidad de Alicante,Alfredo,Ramon Morte,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Director XVI congreso TIG
José,Torres,Universidad de Alicante,Jose,Torres Prieto,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Tecnico XVI congreso TIG
José,Navarro,Universidad de Alicante,Jose Tomas,Navarro Carrion,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
José,Mira,Universidad de Alicante,Jose Manuel,Mira Martinez,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
Miguel,Fernández,Universidad de Alicante,Miguel,Fernandez Moreno,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Tecnico XVI congreso TIG
Estela,García,Universidad de Alicante,Estela,Garcia Botella,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
Pablo,Giménez,Universidad de Alicante,Pablo,Gimenez Font,Universidad de Alicante,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
Antonio,Prieto,Colegio de Geógrafos,Antonio,Prieto Cerdan,Colegio de Geografos,+34965903945,congreso.tig@ua.es,www.congresotig.ua.es,Coordinador XVI congreso TIG
\end{filecontents*}

\begin{document}
%%applyCSV works as a loop.
%%We use \insert+FIELD NAME for inserting your data
\applyCSVfile{names.csv}{
\noindent \sffamily 
	\fbox{\hspace{5mm}\vspace{5mm}
	\begin{minipage}[t][55mm]{85mm}
    		%\pagecolor[cmyk]{.22,.36,.51,.08}%
    		\noindent
    		\textcolor{white}{\textbf{XVI Congreso de TIG}}\\
    		\rule{80mm}{1mm}\\
    			\begin{minipage}[t]{36mm}%Start qrcode minipage
    			\vspace{-1mm}
\begin{pspicture}(36mm,36mm)%Figure size. Not QR size.
\psbarcode{MECARD:N:\insertqrLastName,\insertqrName;
ADR:\insertqrAffiliation;TEL:\insertqrPhone;NOTE:\insertqrNote;EMAIL:\insertqrEmail;URL:\insertqrUrl;}{eclevel=L width=1.4 height=1.4}{qrcode}
\end{pspicture}    
    			\end{minipage}%End qrcode minipage
    			\hspace{1mm}%Gap between qrcode and written ID
    			\begin{minipage}[t]{43mm}%Stard written ID's minipage
        		\vspace{-1mm}%
        			\begin{flushright}
            			%\centering
                		\fontsize{30}{36}\selectfont\textcolor{white}{\insertName}\\
                		\textcolor{white}{\insertLastName}
                		\LARGE%\vspace{10mm}
                		\itshape\textcolor{white}{\insertAffiliation}
        			\end{flushright}
    			\end{minipage}%End written ID's minipage
		\end{minipage}}}%End card minipage%End fbox(card)%End loop
\end{document}