A method for counterfeit detection using a portable device comprising a camera , an adapted band pass filter arranged in the light path of the camera and a counterfeit detection application installed on the portable device to check an object comprising hidden features suitable for the counterfeit detection against counterfeiting, where the adapted band pass filter comprises narrow band transmission windows in the infrared and/or ultraviolet wavelength range and a transmission window covering the visible wavelength range, the method comprising the steps of taking multiple overlapping pictures from at least a portion of the object with the camera of the portable device positioned in front of the object during relatively moving (RM) the portable device along the object , wherein, for each picture of the multiple overlapping pictures, taking a picture comprises taking a first image and a second image, the first image taken with ambient light only and the second image taken with ambient light and IR and/or UV light, and subtracting the first image from the second image to obtain a taken picture; combining all taken pictures to a single combined image of at least the portion of the object with increased resolution by the counterfeit detection application executed on the portable device ; applying image processing to the combined image by the counterfeit detection application providing an improved image with improved properties compared to the combined image in order to visualize or enhance the hidden features of the object comprising an increased contrast in the infrared and/or ultraviolet wavelength range being transmitted by the adapted band pass filter ; and comparing the improved image with the visualized or enhanced hidden features of the object with a reference image of the object comprising the hidden features by the counterfeit detection application to provide an authentication result for the performed counterfeit detection. taking multiple overlapping pictures from at least a portion of the object with the camera of the portable device positioned in front of the object during relatively moving (RM) the portable device along the object , wherein, for each picture of the multiple overlapping pictures, taking a picture comprises taking a first image and a second image, the first image taken with ambient light only and the second image taken with ambient light and IR and/or UV light, and subtracting the first image from the second image to obtain a taken picture; combining all taken pictures to a single combined image of at least the portion of the object with increased resolution by the counterfeit detection application executed on the portable device ; applying image processing to the combined image by the counterfeit detection application providing an improved image with improved properties compared to the combined image in order to visualize or enhance the hidden features of the object comprising an increased contrast in the infrared and/or ultraviolet wavelength range being transmitted by the adapted band pass filter ; and comparing the improved image with the visualized or enhanced hidden features of the object with a reference image of the object comprising the hidden features by the counterfeit detection application to provide an authentication result for the performed counterfeit detection. <EOS>