I started my online store not really thinking I'd actually open a retail store. That's happening now and I'm looking at POS systems. Basically anything I go with I'd have to abandon Wix and start from scratch but I recently discovered WIX has a POS system and hardware. I can't seem to find any real review for it though.
I really don't want to mess with migrating my WIX site to some other platform because of needing a reliable POS system.