(1) You are past 2.5 million in AP.
(2) You play Ingress for at least 10 hours a week. Staring at the Intel map and G+ and COMM socializing does not count. This is 10 hours of actively interacting with portals.
(3) You personally know someone who is already a member of either The Squad or The Cross Faction Squad.
(4) Induction happens only in person.