Signing a crop circle is not a trivial issue: “believers” think that circlemakers pretend to be its authors retrospectively, after its discovery. To obviate this, the evening of 20 June 2015 (9:34 PM), immediately before making a crop circle in Collegno (Turin, Italy), I twitted a string (permalink):

kKbaj9IuNp0QNnisUD47H7gYv9h7Wv8qAf4zZn1ereY=

– Mariano Tomatis (@marianotomatis) June 20, 2015

It is simple to decypher it: just go to the website http://textmechanic.com/Encryption-Generator.html, write the mysterious string in the box:

kKbaj9IuNp0QNnisUD47H7gYv9h7Wv8qAf4zZn1ereY=

specify the password and click Decrypt.

The password is easy: that day the city of Turin, Italy was excited about the arrival of the Pope, the flights had been banned for security reasons and therefore – while we stand next to a flying club – nobody could have seen us from above; but our references were far more prosaic: that night, the only recognized Pope was another Francesco, the man who was holding the project of the crop circle in his hands. The keyword “papafrancesco” refers to him!

Decrypt the long string you get this URL:

http://goo.gl/maps/ZNSc0

pointing (via GoogleMaps) to the field we were going to picture.

Check by yourself!