A micro-optic security device comprising: an image projection system comprising: (i) an array of focusing elements ; (ii) an array of image icon elements disposed proximate to the array of focusing elements such that at least one synthetic image is projected by the image projection system when at least portions of the array of image icon elements are viewed through at least portions of the array of focusing elements; and (iii) an array of control pattern elements integrated across the array of image icon elements; a set of targeting images (310', 310"), comprising at least one targeting image which is one of the at least one synthetic images projected by the image projection system; and at least one reward image , characterised in that the micro-optic security device provides a targeting effect whereby at a predetermined alignment phase, the targeting images are spatially coordinated to coincide with revelation of the at least one reward image; wherein, at the predetermined alignment phase, in-phase portions of the array of control pattern elements are in focus of the array of focusing elements, thereby turning on at least a portion of the reward image; wherein, when the reward image is turned on, one or more of the targeting images are turned off and, when the reward image is turned off, one or more of the targeting images are turned on; or wherein, when only a portion of the reward image is turned on, only a portion of the targeting image is turned off and when only a portion of the reward image is turned off, only a portion of the targeting image is turned on. an image projection system comprising: (i) an array of focusing elements ; (ii) an array of image icon elements disposed proximate to the array of focusing elements such that at least one synthetic image is projected by the image projection system when at least portions of the array of image icon elements are viewed through at least portions of the array of focusing elements; and (iii) an array of control pattern elements integrated across the array of image icon elements; (i) an array of focusing elements ; (ii) an array of image icon elements disposed proximate to the array of focusing elements such that at least one synthetic image is projected by the image projection system when at least portions of the array of image icon elements are viewed through at least portions of the array of focusing elements; and (iii) an array of control pattern elements integrated across the array of image icon elements; a set of targeting images (310', 310"), comprising at least one targeting image which is one of the at least one synthetic images projected by the image projection system; and at least one reward image , characterised in that the micro-optic security device provides a targeting effect whereby at a predetermined alignment phase, the targeting images are spatially coordinated to coincide with revelation of the at least one reward image; wherein, at the predetermined alignment phase, in-phase portions of the array of control pattern elements are in focus of the array of focusing elements, thereby turning on at least a portion of the reward image; wherein, when the reward image is turned on, one or more of the targeting images are turned off and, when the reward image is turned off, one or more of the targeting images are turned on; or wherein, when only a portion of the reward image is turned on, only a portion of the targeting image is turned off and when only a portion of the reward image is turned off, only a portion of the targeting image is turned on. <EOS>