Thanks to tech like Skype, the ability to both see and hear someone across thousands of miles is a mundane exercise for most of us here in the early 21st century. But back in 1947, signing a contract over videophone was like looking into the future. Even if that future turned out a bit different than we were expecting.
When commercial videophone service started in earnest, in the 1960s, one of the big selling points was that you could see and show documents from a great distance. You could even sign contracts with all signatories "present" despite the fact that they were thousands of miles apart.