A device for detecting a counterfeit pharmaceutical tablet or capsule, comprising: (i) a housing including a bottom, wherein a plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) are coupled to the housing and configured to emit light at a plurality of different wavelengths onto an illuminated pharmaceutical tablet or capsule; (ii) two image acquisition devices (70a, 70b) coupled to the housing, adapted and configured to acquire image data from a pharmaceutical tablet or capsule, wherein the image data comprises color, brightness, contrast or darkening of the pharmaceutical tablet or capsule; and (iii) a communications interface adapted and configured to transmit the image data to a computing device; wherein the plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) and the two image acquisition devices (70a, 70b) are coupled to the housing so that the plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) and the image acquisition devices (70a, 70b) are maintained in fixed relation to each other while the pharmaceutical tablet or capsule is being illuminated; and characterised in that: (a) the computing device is selected from the group consisting of a tablet computer and a smartphone; and wherein (b) the two image acquisition devices (70a, 70b) are tilted with respect to the bottom of the device to be aimed at the same location within a focal plane to simultaneously image the same location at different frequencies within the focal plane and acquire image data from the same location on the pharmaceutical tablet or capsule within the focal plane. (i) a housing including a bottom, wherein a plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) are coupled to the housing and configured to emit light at a plurality of different wavelengths onto an illuminated pharmaceutical tablet or capsule; (ii) two image acquisition devices (70a, 70b) coupled to the housing, adapted and configured to acquire image data from a pharmaceutical tablet or capsule, wherein the image data comprises color, brightness, contrast or darkening of the pharmaceutical tablet or capsule; and (iii) a communications interface adapted and configured to transmit the image data to a computing device; wherein the plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) and the two image acquisition devices (70a, 70b) are coupled to the housing so that the plurality of light sources (74a-c, 76a-c, 78a-c, 80a-c, 82a-b, 84a-c, 86a-b, 88a-b, 90) and the image acquisition devices (70a, 70b) are maintained in fixed relation to each other while the pharmaceutical tablet or capsule is being illuminated; and (a) the computing device is selected from the group consisting of a tablet computer and a smartphone; and wherein (b) the two image acquisition devices (70a, 70b) are tilted with respect to the bottom of the device to be aimed at the same location within a focal plane to simultaneously image the same location at different frequencies within the focal plane and acquire image data from the same location on the pharmaceutical tablet or capsule within the focal plane.