Less important, but still useful, was the desire that, during times at which there was an assistant at the base station, the assistant be able to experience my point of view (for example, to see how well the flashlamp provided coverage of a particular object, and to observe the nature of this illumination). I developed a device, known as the `aremac' (camera spelled backwards), comprising an electronic flash which had a viewfinder to preview its field of coverage. The situation in which I could look through the imaging apparatus at the base station while the assistant at the base station could look through my ``eyes'' (aremac) was found to be useful as a communications aid, especially when combined with full-duplex audio communication. I referred to this mode of operation as `seeing eye-to-eye'.