Okay. I LOVE talking about POS systems cuz it`s the one thing I KNOW !!!!!
I hear a lot of talk about Microsoft Dynamics POS, Intuit QuickBooks POS, MYOB POS... WRONG ANSWER!!!!! These are all LINEAR systems which means they are not good for touch screens if speed is something you want.
Now for non-linear systems, there`s quite a few CHEAP software (sometimes even free) out there. DON`T get these! The support for these are little, and once you have an inventory database with a dodgy software (and its protected), and it CRASHES, how are you going to transition it??? It will cost hundreds of hours of WASTED time, and you will be plagued for the rest of your life!!!! Go with a software that will use industry standards for databasing, etc.
So you only have a few software left, you can either go and steal the Coles/Woolworths POS system software (impossible), or go for Aloha by Radiant Systems, or ChikPOS Checkout System. Aloha is much more expensive, and ChikPOS is available off the shelf.
Furthermore, ChikPOS is a Jeremy Shum Invent so its a quality Aussie product too - helping the economy. The features are also endless... multi-language support, managerial decision making reports, not locked to hardware, fully multi-touch (like iphone), external monitor support, xbrl compliant, auto-generation of online store, can advertise "related products", corporate chat support, show time/date/news on external screen... it`s just top stuff. AND it`s Windows 7 compatible!SO GO CHIKPOS!!!!!!!