1. A portable device comprising: a display screen; a processor; and a non-transitory computer readable memory storing software instructions that, when executed by the processor, cause the processor to be configured to: store an identifier code in the memory; encode the identifier code into an image recognizable by an interactive system; and cause the interactive system to perform a transaction via an address upon recognition of the image by displaying the image on the display screen while proximate to an image sensor of the interactive system.