It’s been two years since Target suffered a catastrophic data breach that exposed the personal information of up to 70-million shoppers. Now the retailer has begun converting all of its Red-Card credit and debit cards to chip and pin cards. This means customers will have to enter a personal identification number- Not just a signature to complete a transaction. It’s an extra layer of security. Chip-enable cards create a unique code for each transaction. Old cards hold payment data in the magnetic strip, which is easy for thieves to steal, duplicate and put on fake cards. The retailer is in the process of sending out millions of new cards.