Three codes could be found in The Mystery Continues post on the Investigate Ingress blog.

[1] oq3ku2oa34rq8ka

[2] 7r7pcuechkz8g4e8

[3] xbcifisredrumisofhthz

Code #1

Observations

15 characters with the right amount of numbers for a passcode.

Code #2

Observations

16 characters, again with the right amount of numbers for a passcode.

Code #3

Observations

21 characters. Everything seems to be there but not the right way.