Throughout Colossus: The Forbin Project, characters talk to one another over video phones. This is a favorite sci-fi interface trope of mine. And though we’ve seen it many times, in the interest of completeness, I’ll review these, too.
The first time we see one in use is early in the film when Forbin calls his team in the Central Programming Office (Forbin calls it the CPO) from the Presidential press briefing (remember those?) where Colossus is being announced to the public. We see an unnamed character in the CPO receiving a telephone call, and calling for quiet amongst the rowdy, hip party of computer scientists. This call is received on a wall-tethered 2500 desk phone.
We cut away to the group reaction, and by the time the camera is back on the video phone, Forbin’s image is peering through the glass. We do not get to see the interactions which switched the mode from telephony to videotelephony.
But we can see two nice touches in the wall-mounted interface.
First, there is a dome camera mounted above the screen. Most sci-fi videophones fall into the Screen-Is-Camera trope, so this is nice to see. It could mounted closer to the screen to avoid gaze misalignment that plagues such systems.
Second, there is a 12-key numeric keypad mounted to the wall below the screen. (0–9 as well as an asterisk and octothorp.) This keypad is kind-of nice in that it hints that there is some interface for receiving calls, making calls, and ending an ongoing call. But it bypasses actual interaction design. Better would be well-labeled controls that are optimized for the task, and that don’t rely on the user’s knowledge of directories and commands.
The 2500 phone came out in 1968, introducing consumers to the 12-key pushbutton interface rather than the older rotary dial on the 500 model. The 12-key is the filmmakers’ building on interface paradigms that audiences knew. This shortcutting belongs to the long lineage of sci-fi videophones that goes all the way back to Metropolis (1927) and Buck Rogers (1939).
Also, it’s worth noting that the ergonomics of the keypad are awkward, requiring users to poke at it in an error-prone way, or to seriously hyperextend their wrists. If you’re stuck with a numeric keypad as a wall mounted input, at least extend it out from the wall so it can be angled to a more comfortable 30°
There is another display in the CPO, but it lacks a numeric keypad. I presume it is just piping a copy of the feed from the main screen. (See below.)
Looking at the call from Forbin’s perspective, he has a much smaller display. There there is still a bump above the monitor for a camera, another numeric keypad below it, and several 2500 telephones. Multiple monitors on the DC desks show the same feed.
After Dr. Markham asks Dr. Forbin to steal an ashtray, he ends the call by pressing the key in the lower right-hand corner of the keypad.
After Colossus reveals that THERE IS ANOTHER SYSTEM, Forbin calls back and asks to be switched to the CPO. We see things from Forbin’s perspective, and we see the other fellow actually reach offscreen to where the numeric keypad would be, to do the switching. (See the image, below.) It’s likely that this actor was just staring at a camera, so this bit of consistency is really well done.
When Forbin later ends the call with the CPO, he presses the lower-left hand key. This is inconsistent with the way he ended the call earlier, but it’s entirely possible that each of the non-numeric keys perform the same function. This also a good example why well-labeled, specific controls would be better, like, say, one for “end call.”
Other video calls in the remainder of the movie don’t add any more information than these scenes provide, and introduce a few more questions.
Note the duplicate feed in the background in the image above. Other scenes tell us all the monitors in the CPO are also duplicating the feed. I wondered how users might tell the system which is the one to duplicate. In another scene we see that the President’s monitor is special and red, hinting that there might be a “hotseat” monitor, but this is not the monitor from which Dr. Forbin called at the beginning of the film. So, it’s a mystery.
In the last video conference of the film, everyone listens to Unity’s demands. This is a multiparty teleconference between at least three locations, and it is not clear how it is determined whose face appears on the screen. Note that the CPO (the first in the set) has different feeds on display simultaneously, which would need some sort of control.
Plug: For more about the issues involved in sci-fi communications technology, see chapter 10 of Make It So: Interaction Design Lessons from Science Fiction. (Though it’s affordably only available in digital formats as of this post.)