Wall mounting assemblies and methods are disclosed. The lure is designed so that the concave section floats above the surface of the water, and when pulled with a fishing line, the lure will topple over to immerse the concave section in the water. It also includes a segmentation method to distinguish the foreground, for example an indicator such as a finger, from the background of a computer screen. Accessories to be mounted into the modular interface system may either include mating formations that are provided as integrated OEM parts or through the use of retrofit adapter panels mounted to the secondary device.