What is disclosed is a novel system and method for content-aware resizing of a digital image. A shaft is supported by the housing for rotating about an axis. The method comprises: receiving a request to share a picture; determining that the picture comprises an image of a person; and requesting that the person, or someone associated with the person, consent to sharing the image. A narrowed portion of the connecting tube is caulked so that the shield layer is sandwiched between the narrowed portion of the connecting tube and the C-ring. The present invention enables a quantitative, probability-based interpretation of the degree and the kind of mismatch to verify authenticity. The wound retractor retracts an opening in a body wall into a body cavity, while the internal retractor permits a user to control the positions of internal structures within the body cavity, thereby permitting a user to define a surgical field.