1. A mobile computing device comprising: a microprocessor; an imaging device including a two-dimensional image sensor communicatively coupled to said microprocessor and an imaging lens configured to focus an image of a target object on said two-dimensional image sensor; a display communicatively coupled to said microprocessor; at least one motion sensor communicatively coupled to said microprocessor; wherein said mobile computing device is configured to periodically display a preview image frame of said target object on said display; wherein said mobile computing device is further configured to compensate for a movement of said imaging device relatively to said target object during a time period elapsed between taking and displaying said preview image frame, by transforming said preview image frame based on device movement detected by said at least one motion sensor.