Three codes were hidden in the HTML source of the THE ITO EN TRANSMUTER post on the Investigate Ingress blog.

[1] 6w3ue38rxprzky

[2] 5vby3yofvw8g2u

[3] lk8ftp8b4s7neu

Code #1

Observations

14 characters with the right amount of numbers for a valid passcode

Code #2

Observations

Passcode format is there, go through your usual cipher routine

Code #3

Observations

14 characters with the right amount of numbers for a valid passcode