In 1902 AD, a man named Pau Cin Hau had a dream where the characters of a logographic script were revealed to him. He also developed the Laipian religion, and his script was used extensively in liturgical works. Laipian actually means “script-based”, so the script was intimately connected to the religion.
The script had around one thousand characters, which is a small number for a logographic language.
Also unusually for a logographic language, the glyphs are very abstract, with no recognizable connection to tangible physical objects.
There is a story that the Chin people had a script in ancient times, but that there was only one copy of it, written on an animal hide. The guardian of the script went travelling with his dog, who got hungry and ate the script!
In the 1950s, there was a rapid Christianization of the Chin people, which lead to a drop in the number of people who learned the Laipian scripts.
Links: Unicode proposal