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Security Envelope Pattern collection – S.E.C.R.E.T

Recorded: May 31, 2026, noon

Original Summarized

Security Envelope Pattern collection | S.E.C.R.E.T.

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ARCHIVE

All
BY ORDER

Abstract
Geometric
Iconic

BY FAMILY

Dynamic
Organic
Repetitive
Representational
Woven

BY GENUS

Basketweave
Camouflage
Circles
Confetti
Cryptic
Decorative
Diamonds
Dots
Emblematic
Illustrative
Lines
Mesh
Noise
Squares
Plaid
Triangles
Woodgrain
ZigZags

BY SPECIES

Black
Blue
Brown
Green
Grey
Orange
Pink
Purple
Red
Turquoise
Yellow

INFO

About
Classification
Donate
Credits

CONTACT

Submissions
Send a message

HOME
ARCHIVE

All
BY ORDER

Abstract
Geometric
Iconic

BY FAMILY

Dynamic
Organic
Repetitive
Representational
Woven

BY GENUS

Basketweave
Camouflage
Circles
Confetti
Cryptic
Decorative
Diamonds
Dots
Emblematic
Illustrative
Lines
Mesh
Noise
Squares
Plaid
Triangles
Woodgrain
ZigZags

BY SPECIES

Black
Blue
Brown
Green
Grey
Orange
Pink
Purple
Red
Turquoise
Yellow

INFO

About
Classification
Donate
Credits

CONTACT

Submissions
Send a message

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The Society for the Exploration of Confidential Repetitive Envelope Tints
WELCOME TO


HELLO ANDWELCOME

TO SECRET

(The Society for the Exploration of Confidential Repetitive Envelope Tints)If you’re here, then you too appreciate the fine art of making things hard to read. S.E.C.R.E.T. was founded to connect with fellow collectors, to create the first standardized security envelope pattern collection, and to delight in playful taxonomy. Adopting the coined term of Obscurationists, we celebrate the craft of secrecy.
Though the windowed envelope has existed since 1901, surprisingly little is known about the origins of the intriguing patterns hidden inside. And there’s something quietly beautiful about the mystery of it all.
Support The Project THE LATEST FROMTHE ARCHIVE

Lemon Escher Cubes

Broken Codex

Petal Mesh

Bureaucratic Lightning

Pythagorean Tile

Grid of Mild Concern

READY TO NERD OUT?

Enjoy all the patterns we’ve classified so far.

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Learn more about our Classification System.

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Contribute your own patterns to the Archive.

CONTRIBUTE EVER CURIOUSObscurationist (n.)
Ob•scu•ra•tion•ist  [ob-skyoor-AY-shuhn-ist]
Definition:
A person who studies, appreciates, and documents the visual patterns designed to obscure printed information – especially the strange and beautiful tints found inside security envelopes.
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WELCOME FELLOW OBSCURATIONISTS!JOIN THE SOCIETY

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The Society for the Exploration of Confidential Repetitive Envelope Tints, known as S.E.C.R.E.T., was established to foster a community among collectors interested in the artistry of obscuring printed information within security envelopes. The society aims to connect members and create the first standardized collection of security envelope patterns, celebrating the craft of secrecy through a playful taxonomy. This group formally adopts the term Obscurationists to acknowledge and celebrate the study, appreciation, and documentation of the visual patterns intended to conceal content in these envelopes. The organization engages with the historical context of windowed envelopes, noting that despite their existence since 1901, very little is publicly known about the origins of the intricate patterns concealed within them, highlighting a quiet mystery surrounding this subject.

The archive organizes the collected patterns through a structured classification system. Patterns are categorized by order, such as Abstract, Geometric, and Iconic, and further divided by family, encompassing groups like Dynamic, Organic, Repetitive, Representational, and Woven. The genus level classification includes categories such as Basketweave, Camouflage, Circles, Confetti, Cryptic, Decorative, Diamonds, Dots, Emblematic, Illustrative, Lines, Mesh, Noise, Squares, Plaid, Triangles, Woodgrain, and ZigZags. Finally, these patterns are further specified by species, organized by colors including Black, Blue, Brown, Green, Grey, Orange, Pink, Purple, Red, Turquoise, and Yellow. This comprehensive system allows for the systematic exploration and documentation of the visual intricacies found in these envelope designs.