1. A system comprising: an imaging device operable to capture an image depicting a class of subjects that may have a temporal presence in an area; an anonymization device having a selector circuit operable to select an anonymization policy, the anonymization policy includes obscuring a property of the class of subjects depicted in the captured image; a display device operable to display colored lights indicative of the selected anonymization policy to at least a portion of the area, the colored lights perceivable by a human as an aid for making a decision whether to remain in the area; and an anonymization circuit operable to generate an anonymized image by applying the selected anonymization policy to an image captured by the imaging device and depicting a member of the class of subjects.