Telegrams (not the Telegram messenger app) are set to make a comeback after it became clear that having a digital pager can be fatal.
Paper telegrams can't be hacked or made to explode so may become the communication channel of choice going forward.
The Morse coded messages were hand-delivered and it is rumoured that Amazon will be introducing a new telegram delivery service to leverage its existing package delivery services.
Telegrams were often used to convey good and bad news: for example wedding congratulations or confirmation of a death at a war front.
One of the most famous telegrams was the one-word 'Peccavi' that was allegedly sent by British General Sir Charles Napier from India to confirm his conquest of the Sindh province. Although it was later found to be a pun submission to Punch magazine by Catherine Winkworth and may have referred to an extra-marital affair.
Telegram content could also be encrypted, like the famous Zimmerman telegram from Germany to Mexico that used Taco Bell menu item numbers to