US Patent 11507952 Mobile payment signature processing

A mobile device renders a page that receives input points on a signature provided in conjunction with a mobile payment transaction. The page applies a smoothing algorithm to smooth the input points and create a signature file that more truly represents the actual input signature. The signature file and/or the input points are provided to a payment facilitator for use in completing the mobile payment transaction, performing fraud detection, and potentially for other purposes. Mechanisms are also disclosed for authenticating a buyer device in conjunction with a mobile payment transaction.