I've seen quite a few Point Of Sale (POS) systems out there, a few of them now have a screen for accepting Bitcoin too, all of which use Bitpay.
One of the services that the BitShares Munich DAC will offer is the sale and install of POS systems.
It needs to be open source, tie into inventory, have a barcode scanner on the bottom, a card swiper on the side and the screen (ie: http://www.bitstraat.nl/en/product/the-handheld/
) needs to allow for cash, credit or crypto (ANY crypto, so it has to be modular).
Does anyone here know of a github user or anyone working on this already?