Pagers are also popular among people who work in secure areas (in the sense of national security, e.g., at national labs) because they are one-way so you can bring them inside; they receive information but cannot transmit it out.
Also, I’ve been to places where they do things like “no external laptops; however you can bring your phone in-we will cover the camera with security tape, and check the tape on the way back out”. Obviously that is not what they do for classified stuff, but not everything sensitive is classified (indeed, some governments have a category “sensitive but unclassified”). And some private sector entities copy aspects of public sector security, but rarely to the same extreme, which can produce similar rules.
One of my Korean colleagues had this theory-senior executive ranks in Korea are dominated by former military officers, and as a result the corporate culture is heavily influenced by the military - including an obsession with countermeasures against corporate espionage. In practice, I don’t they were doing anything worth spying on, while the extreme security rules were a big burden on developer productivity
https://www.trendmicro.com/vinfo/au/security/news/vulnerabil...
> Pagers are also popular among people who work in secure areas (in the sense of national security, e.g., at national labs)
https://pagersdirect.net/collections/alpha-numeric-pagers/pr...
However, there seem to be other weaker links in that chain (like the email that's being sent to the host).