the present invention provides a method of generating information embedded halftone screen code . according to this method , massive digital information can be stored through printing on at least one type of print media . the information embedded can be read and recognized simply and reliably . the quality of the images will not be reduced after information embedded . the information printed on the media includes a predetermined array of halftone dots with different morphology including physical and geometrical characteristics , which forms the computer codes to embed information into printed content . the advantages of this invention are : the maximum similarity value can be reduced to under the threshold value according to this method ; the recognition performance of the halftone screen code can be improved ; and robustness can still be maintained at a high level even though the paper is defected or polluted .