compare with 3000+ installations (only counting solutions that is,btw) on the PDF that was bookmarked here on the board (where is it now? got to reload it) and sent by TandR.
assume EUR 5,000 per installations (an average, some small clients, some large ones) and imho this is a low assumption. some clients are chains, airports etc that's EUR 15Million revenues
for 2011 it was reported a few millions in sales by DIAAF after acquiring TandR