Some have suggested that it stems from Hussenot's device because it used film and “ran continuously in a light-tight box, ...

What is a black box, what can it tell us, and have the data recorders been found from Flight 5342 and the Army's Blackhawk?

If a black box has been submerged in seawater ... But it took several years before officials understood just how valuable the device could be and began installing them in commercial airlines ...