1. A mobile computing device, comprising: a housing; a controller in the housing hosting a computing application with executable instructions, the computing application for depositing or transferring funds of an amount of a check; and a camera maneuvered by a user manipulating the housing, the camera when activated by the computing application delivers to the controller for processing a video sequence of a plurality of frames of images of the check, wherein the controller is configured to find in a single frame of the plurality of frames of the video sequence both routing transit symbols that delineate a routing transit number on a MICR line of the check, determine a first distance from one of the routing transit symbols to the other of the routing transit symbols and a second distance from said one of the routing transit symbols to an edge of the check, calculate a ratio of the first distance to the second distance; determine values for each digit of the routing transit number; and capture the image of the check from the single frame.