500
Some Walmart employees say customers are getting hostile at self-checkout — and they blame anti-theft tech
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
Based on nothing but the people I have seen at Walmart, I would assume there are more people with a convicted criminal history shopping at Walmart than Target.
A key to success in business is knowing your customer base.
They do sell crowbars no?