An imaging method, comprising: receiving electromagnetic radiation at a focal plane array of a handheld device; processing the received electromagnetic radiation within the handheld device; and displaying visible images on the handheld device indicative of a scene including a designator and a designator identifier, the designator and designator identifier being representative of pulsed electromagnetic radiation (14, 16) received by the focal plane array; the method characterised by the step of processing the received electromagnetic radiation comprising converting the electromagnetic radiation into image data and into high frequency pulse data using the focal plane array as a single focal plane array with a single objective lens; wherein the image data includes pixel photocurrents integrated over a first exposure period; wherein the high frequency pulse data includes voltages representative of presence, or lack of presence, of high frequency laser illumination within a second exposure period; wherein the second exposure interval has a shorter duration than the first exposure interval; and wherein the method further comprises: constructing a visible image using the image data; and generating the designator and/or the designator identifier using the high frequency pulse data, wherein the designator is inserted into the visible image when the high frequency pulse data indicates the presence of pulsed laser illumination, and the designator identifier is inserted into the visible image when the high frequency pulse data corresponds to a predetermined pulse repetition frequency code. receiving electromagnetic radiation at a focal plane array of a handheld device; processing the received electromagnetic radiation within the handheld device; and displaying visible images on the handheld device indicative of a scene including a designator and a designator identifier, the designator and designator identifier being representative of pulsed electromagnetic radiation (14, 16) received by the focal plane array; the method characterised by the step of processing the received electromagnetic radiation comprising converting the electromagnetic radiation into image data and into high frequency pulse data using the focal plane array as a single focal plane array with a single objective lens; wherein the image data includes pixel photocurrents integrated over a first exposure period; wherein the high frequency pulse data includes voltages representative of presence, or lack of presence, of high frequency laser illumination within a second exposure period; wherein the second exposure interval has a shorter duration than the first exposure interval; and wherein the method further comprises: constructing a visible image using the image data; and generating the designator and/or the designator identifier using the high frequency pulse data, wherein the designator is inserted into the visible image when the high frequency pulse data indicates the presence of pulsed laser illumination, and the designator identifier is inserted into the visible image when the high frequency pulse data corresponds to a predetermined pulse repetition frequency code. constructing a visible image using the image data; and generating the designator and/or the designator identifier using the high frequency pulse data, wherein the designator is inserted into the visible image when the high frequency pulse data indicates the presence of pulsed laser illumination, and the designator identifier is inserted into the visible image when the high frequency pulse data corresponds to a predetermined pulse repetition frequency code.