If it's something you could do (for your programming charge, of course), I'd sure go for it.
Fortunately, we do get a number of repeat customers, and you might be astounded at how some employees think they might find existing names. So I just keep finding more and more duplicates, and, of course, can't delete them without deleting their sales history. And we really promote the concept of recalling what they've bought in the past.
I have to say, though, that I'm still amazed at how few changes I feel I need to ask for, considering what you charge for this software, Ronald. I just transferred my financials to Xero, so had occasion to look into the available "add-ons" to see what might communicate with it - including POS systems. WOW! You really offer a heck of a deal!
Bob