14. The computing device of claim 12 , wherein the instructions, when executed by the processor, cause the processor to: receive fourth image data captured using the one or more imaging sensors; analyze the fourth image data to determine that the object is not facing the computing device; and perform no action on the computing device in response to receiving a second selection of a third selectable element of plurality of selectable elements.
12. The computing device of claim 11 , wherein the instructions, when executed by the processor, further cause the computing device to: determine a relative motion of the first portion of the object over a period of time between capture of the first image data and capture of the second image data.