US Patent 10489816 Offers to print three-dimensional objects

A method comprises determining, based at least in part on input detected by a mobile device, an offer to print a three-dimensional object, wherein the input detected by the mobile device suggests information about a user of the mobile device, and wherein the offer is chosen to be of interest to the user based on the information about the user. The method further comprises outputting the offer to print the three-dimensional object, detecting that offer conditions have been satisfied, and responsive to detecting that offer conditions have been satisfied, enabling printing of the three-dimensional object at a three-dimensional printer.