I'll just run your card through our computer ...

No wonder some people are paranoid about the returns procedures at some stores:

(Click on image for full size.)

But seriously, folks ... it has caused some complaints to the privacy commissioners in Canada:

• The Canadian Privacy Law Blog: Retailers demanding ID, tracking returns
• The Canadian Privacy Law Blog: Alberta Commissioner releases report concerning collection and retention of personal information by two retail stores
• The Canadian Privacy Law Blog: Electronic Blacklists: Some shoppers find fewer happy returns
• The Canadian Privacy Law Blog: BC Commissioner issues first order under province's private sector privacy law