@normanjaeckel ok, a short help text could be useful, right. 
(second question): No, I don't like it to add WLAN info to welcome slide because this is the first slide which users will see (then WLAN is not yet configured). And there should be a slide which show a welcome message only - without any technical info.
Just to know: Currently we can create qrcodes only with reportlab in PDF. For show it on a new slide we need to add the qrcode package as required again. I don't like it to do for 1.5.