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American retailer or Big Brother?

Loyalty programs and reward cards have become a retailing fixture in recent years, but one American chain is taking things to a whole new level.

Target tracks its clients to such an extent it can determine when someone is pregnant, for example, and customize its advertising to suit.

Click on the link below to hear Airplay's technology columnist Anshuman Iddamsetty talk to Dave about the new trend, and how far it will go.

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