How Saturn’s Mobile Policy Evolved: the Shift from Open Campus Access to Hard Phone Gates
Students often ask why they cannot simply verify their account via email or use a free texting app. The answer lies in telecommunications infrastructure. Telephony protocols categorize numbers into distinct types: traditional cellular lines, landlines, and Voice over Internet Protocol (VoIP).
When an applicant enters a phone number into Saturn, the system runs an automated carrier query through identity authentication providers. The service checks the Mobile Country Code (MCC), the Mobile Network Code (MNC), and the line type.
If the system detects that the number originates from an over-the-top VoIP provider, the transaction terminates instantly. Saturn explicitly rejects these services because they require no government identity validation or credit card verification to set up. A single bad actor could create 50 distinct Google Voice accounts in an afternoon to monitor multiple campuses. By requiring a cellular carrier contract, Saturn prices out low-effort bot networks and spam farms.