We don’t know where the founders received the Glyphs, but their use has been documented from the very beginning of the Authority. In modern times, we use OLED Displays to achieve the needed effects, before light boxes, mirrors, and colored film.
The Extergito Glyphs are a set of Glyphs, which when combined with a color and flashed at specific frequencies unique to each of them, result in a direct ray of anomalous effect. This effect is scaled to the size of the glyph and extends directly from it at a perpendicular angle, making it easy to target individuals. The ray is unaffected by most material and terminates upon contact with living tissue, which can be effected. Listed below are the Glyphs used by Authority Agents:
TERS (G-1): This glyph results in the complete memory loss of prior 28 hours.
INAN (G-2): This glyph results in the complete loss of memory.
MUTA (G-3): This glyph allows implanting of memories and suggestion.
QUIE (G-4): This glyph is used to combat memetic danger and sedation.
Agents are equipped with display devices, with form-factor similar to fire arm grip, allowing for safe and accurate aiming. Available glyphs for agents are dependent on security level and can be easily selected using the dial on the display device. More glyphs exist, but are unnecessary for field use, have yet to be understood, or are deemed too dangerous.
For mass population incidents, a small network of satellites are equipped with display arrays, making targeting large population centers or small facilities accurate and relatively easy to carry out.
I thought it would make for something different than chemical amnestics, give a small hint to the original guard of the Authority and what they may have been finding in the old days, as well as make people wonder about the ones not being used. Amnestics eldritch anomalous cousin.
I'm thinking 5 is about the right number, but their effects, names, and all that can use fine tuning. I can make diagrams for the display devices and how they're used, if it'd help. Names for the glyphs are derived from Latin, first 4 letters for words like Empty and Alter, the G-# is to make them easier to reference in writings. "Use of EG-2 approved" for example.
It may also be that certain glyphs require longer exposure time to be effective, like with EG-2. Might require having someone tied down and in line of the ray for hours to gain the effect. I'm hoping the community can run with this idea and find the best version of it to use officially.
I do like the idea that the Authority in 1908 had to carry about these big wooden boxes, with a pictures of the glyphs in the bottom and a mirror with replaceable colored films. Had to get the frequency flashes down to a shutter operated by a gear system and a bulb or lamp.
I have an example of them being used in Drafts, with RPC-31