Softcard, a mobile payments system that preceded but competes against systems such as Apple Pay and Google Wallet, was created as a joint venture with investments by mobile carriers AT&T, Verizon, and T-Mobile. In the midst of Apple implementing near-field communications (NFC) for Apple Pay, along with internal struggles at Softcard, reports are surfacing that the mobile payment company is being sized up for purchase, potentially by one of its rivals.