A new study of public requests for more NFC-based mobile wallet options when paying has found that Apple Pay is by far the most-requested "tap to pay" option, and that consumers are accelerating their demands for mobile-payment options at the places they shop in the US -- which will be good news for all "e-wallet" vendors. The poll, conducted by analyst firm Piper Jaffray, asked 507 resellers and independent software merchants about mobile payment technology options.