Final answer:
Storing a new acquaintance's picture on an iPhone is an example of a visual memory aid, leveraging visual encoding and recognition to aid in recalling the individual's appearance.
Step-by-step explanation:
Storing a new acquaintance's picture in one's iPhone so that one can recall what he looks like provides a good example of a visual memory aid. This is because by storing an image, you are using visual encoding, which is the encoding of images. When you later need to recall who the person is, the image serves as a cue for recognition. This is one of the three ways to retrieve information from long-term memory storage, where recognition allows you to identify previously learned information after encountering it again. In contrast, auditory memory aids would involve sound, olfactory would be related to smell, and tactile would refer to touch. The concept of visual memory aids can be further exemplified when taking notes during a site visit. If you sketch, photograph, or videotape the site, these visual records can serve as effective memory aids for recalling the details of the site visit.