Three codes could be found in the FUTURE EDITS post on the Investigate Ingress blog.

[1] 58ruaelintxg825

[2] wd7,vol3kxcnr1

[3] axhchcddqdxmlunrqopoprnwyrssyiw

Code #1

Observations

15 characters with the right amount of numbers for a valid passcode. The keyword you see is not the right one

Code #2

Observations

The comma is a good indication on what you need to do.

Code #3

Observations

One of the lesser used cipher invented by Felix Delastelle