As a kid, did you have a special language or secret code for messages to your best friend?  There is something inside us that delights in those special ways to communicate.  As we have seen in the Enigma story, secret codes can be serious.  Cracking them can affect the future of civilisations.  Like good secrets, codes excite and tantalize us.

Humans are inventive creatures and we have developed codes for a wide array of social interactions.  From fan flirting to the language of flowers, we love to communicate in secret.

The placement of stamps on post cards or letters is one such code.  When mail service was first introduced, the postage was paid by the recipient of a letter.  For some, the cost was prohibitive.  Soon inventive letter writers devised a neat code to convey a message that would not result in a cost to the receiver.  An addressed post card may have no written message but the position of the stamp was itself the message.  The post man would present the card and the receiver “read” the real message without paying a postage fee.

The Danes are credited with this concise method of communication known as “Frimærkesprog”, meaning “stamp language”  Meanings vary from country to country but if you received a card whose stamp was upside down in the top left corner, you were loved!  A stamp that was placed upside down in the top right corner signaled  that you should write no more.  Collectors of postcards are crazy for this variant of communication.

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With the prevalence of emails and texting, why not try the simple practice of letter writing to share your secrets.  Who would guess?

Secrecy is the cement of friendship. Wellins Calcott