1. A computing device, comprising: a display screen; a computing device processor; a first camera; a second camera; and a memory device including instructions that, when executed by the computing device processor, cause the computing device to: capture first image data by the first camera, the first image data including a representation of an object, the object associated with physical dimensions; display an interface for determining a position of the computing device with respect to a reference point, the interface including the representation of the object, the representation of the object associated with displayed dimensions; determine the position based at least in part on the physical dimensions of the object and the displayed dimensions of the representation of the object; and use the position to determine whether a bodily feature of a user represented in second image data captured by the second camera aligns with an alignment element within a threshold amount of deviation.