Do you trust supermarket loyalty schemes and what's developing in New Zealand?

Aldi is the UK's cheapest supermarket yet again, which supermarket has sold almost 200 million free-range eggs in the last 12 weeks and do you know it may soon be possible for you to pay for what you buy at your supermarket simply by having your palm scanned? This time we also learn of the possibility of a significant third player entering the New Zealand supermarket industry.