A method is provided. The method includes receiving, from a monitor interface implemented by a first computing device, input specifying a zone within a field of view of an image capture device; storing, in response to reception of the input, a record defining the zone; receiving, from the image capture device, an image acquired within the field of view by the image capture device; and rendering, via a customer interface implemented by a second computing device distinct from the first computing device, the image with a representation of the zone overlaid upon the image.