Writing and Printing
Lontara Bilang-bilang is a cipher of the Lontara script, currently used for Buginese poetry. This script uses the Eastern Arabic numerals-inspired letterform to substitute the Lontara script, as a way to hide it to the Dutch at the time. It was an adaptation to a similar ciphers of the Arabic script that has been used in South Asia around the 19th century.
Horizontal and vertical writing in East Asian scripts.
Ancient Kamarupi script.
Text from Wikipedia; plate via Wikimedia Commons. Text CC BY-SA 4.0; plate freely licensed (see Commons). Source record. Images and catalogue data are reproduced from open-access collections.