Three codes could be found in the PICKING SIDES post on the Investigate Ingress blog.
[1] 6ooi54nirnve85isxz
[2] n!)9pstu0t!)!!st!!zfodvju1)&))
[3] rnk77taw982jf
Code #1
Observations
18 characters with the right amount of numbers for a valid passcode
Code #2
Observations
Lowercase, numbers, why symbols when the only thing missing would be uppercase !!
Code #3
Observations
Passcode format is there, go through your regular cipher routine