Hany Farid, chair of the Dartmouth College computer science department, left, works with doctoral student Shruti Agarwal, right, on a technique for identifying license plate numbers at extremely low resolutions in Hanover, N.H., on Wednesday, February 15, 2017. Farid and his team use images of a multitude of license plates, shrink them down until they are just a handful of pixels, and compare the image data to that of the plate that needs to be identified. Farid is developing the technique as part of a murder investigation. (Valley News – James M. Patterson) Copyright Valley News. May not be reprinted or used online without permission. Send requests to permission@vnews.com.