1. A method of communicating adjustments for relative positioning of a handheld electronic device with a camera, and a document, the method comprising: continuously receiving, at a processor of the handheld electronic device, a plurality of images of characters on the document; dynamically detecting edges of the characters while continuously receiving the images; thickening the edges of the characters; thresholding the edges of the characters; displaying, using a display of the handheld camera, the edges of the characters; determining an average font height of the characters using the edges of the characters; and determining relative positioning information about positioning of the handheld electronic device relative to the document.