Decoder Club

Find secret messages, unlock hidden missives, chart new digital territories, and win tiny treasures.

Once you receive your Decoder (free with membership signup) a carefully designed, beautifully crafted postcard with a coded message will arrive each month in your physical mail box. 

It might be a password that unlocks the beginning of a digital adventure, a delightful poem to savor, or a more complex, multi-part puzzle.

Hidden within each monthly puzzle is also a fragment of the Calendar Cipher, a larger mystery revealed piece by piece throughout the year. When all twelve fragments are assembled, the cipher reveals a final password that unlocks prizes large and small.

In addition, we've been sprinkling secret messages in plain sight in the physical, traveling version of the museum.  Bring your Decoder when you visit for a special set of puzzles and prizes.

One time shipping fee of $5.50 is added at checkout to receive your Decoder.

If you sign up mid-year, you’ll have access to earlier months’ puzzles in our gift shop.