Three code were hidden in the TO BE OR NOT TO BE post on the Investigate Ingress blog.
[1] cbaea5a8cdafb7b0abb6b1abb1cca8c9a7
[2] 3cgl1ckfsdgmdzy0p4s
[3] sh5go9ezwdh4uo4
Code #1
Observations
Looks like hex but range is off
Code #2
Observations
Passcode format is there, think of it as a wave
Code #3
Observations
15 characters with the right amount of numbers for a valid passcode