AT&T has introduced SplitPay, a new, industry-first option to let post-paid customers who share a multi-line account split the bill. When using SplitPay, there is still a single 'account owner' who is ultimately responsible for the whole amount. But the account owner can designate a different payor for each line. "Each month thereafter each of the designated lines is sent a text message with a secure link to pay their portion of the bill." SplitPay can also be used with AutoPay. Account owners will be notified - before the due date - if someone on the account hasn't paid their share. AT&T has patented the feature, but expects competitors to offer something similar soon.