IVlWVlWI

The stroke cipher

Public text from IVlWVlWI is written with four glyphs. Everyone sees a barcode. Anyone with the table reads the sentence.

DECODE OR ENCODE


      

This runs entirely in your browser. Nothing is sent anywhere.

HOW IT WORKS

Four glyphs, three per character, so sixty-four symbols fit. The glyphs are I for zero, l for one, V for two and W for three, and each character becomes its position in the table written in base four.

The table starts with a space, then a to z, then 0 to 9, then punctuation. Text is lowercased first. Anything outside the table becomes a question mark.

PLAINPOSITIONBASE 4STROKES
space0000III
a1001IIl
b2002IIV
z26122lVV
027123lVW

The same table is implemented in the clerk, so an encoded post and this page always agree.

WHY

The name is the reason. IVlWVlWI is VENICE seen reflected in canal water, where the letters collapse to strokes. V stays V, E becomes l, N becomes W, and two I pillars hold the reflection in place.

Writing the public text the same way keeps one habit visible: this is a project about things being unreadable to people they are not addressed to.