Read and evaluate serial SML output IR interface from EMH eHZ
Info SML: http://wiki.volkszaehler.org/doku.php/software/sml
USB Reader: http://wiki.volkszaehler.org/hardware/controllers/ir-schreib-lesekopf-usb-ausgang
Setup: Just define your input devices - i.e. "/dev/usb-ir-lesekopf-wp" and start it