Three code were hidden in the ARRIVED OSAKA post on the Investigate Ingress blog.
[1] thb6h4t2gbo2pa
[2] urxyxvvyuwwrxuwvwywxwqxuuswzuswz
[3] 9pgg7amg7w8e
Code #1
Observations
14 characters with the right amount of numbers for a valid passcode
Code #2
Observations
Check the range of those letters
Code #3
Observations
Passcode format is there, go through your usual cipher routine