Three code could be found in the AKIRA’S NL-1331 INSPECTION VISIT DURING SAN FRANCISCO #EXO5 post on the Investigate Ingress blog.
[1] 0bdx9wtnwwksxo3d1r
[2] etbtydbybsibbtriibbtbpbtnrabmtalfh
[3] ye3m3weyo6crv9q
Code #1
Observations
Passcode format is there, go through your usual cipher routine
Code #2
Observations
This is truly a periodic theme
Code #3
Observations
15 character with the right amount of numbers for a valid passcode