Three codes could be found in the COME SEE THE MAGIC post on the Investigate Ingress blog.
[1] x7w3akanh1qld4
[2] ad867f96a89886877b7d868997ad78ae96
[3] ksvhvne4widw72i7
Code #1
Observations
Look at it the right way and the passcode format is there
Code #2
Observations
Looks like hex, the usual transformation will get you the code
Code #3
Observations
16 characters with the right amount of numbers for a valid passcode