Walmart isn't the only major retailer developing its own mobile wallet. Reuters reports that Target is in the early stagings of planning its own payments system as well. While the company hasn't committed to launching just yet, it has reached out to credit card companies regarding how transactions will be handled. If you'll recall, Target is part of the CurrentC mobile wallet initiative, and plans to remain a member (alongside Walmart) of the Merchants Customer Exchange that's developing the software. The company says it's just exploring its options.