Starbucks is reversing its open-door policy after almost seven years, now requiring that people make a purchase if they want to hang out at its coffee shops or use its restrooms. The coffee giant said on Monday that a new code of conduct – which will be posted in all company-owned North American stores – will also ban discrimination or harassment,

Starbucks customers will have to buy something to hang out or use the restroom. CNBC's Rick Santelli joins 'Squawk Box' to break down the December producer price index (PPI) data.