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.
Same Czech Republic and Slovakia. All the stores have now majority of sell checkout registers. People prefer them. No issues with them.
There is usually one person assigned to 6-8 of these that is watching and making the corrections.
It cut the waiting time significantly.