ICTO Tips - Learn about Two-Factor Authentication service (2FA)
Common questions:
Step 2) Register 2FA in ICTO Account Information Page by using campus network
Step 3) Verify the success activation of 2FA service
More: 2FA Application Procedure
Step 2) Use your device to verify your identity
Step 3) Securely logged in
More: Two-Factor Authentication Introduction Video
More: How do I reactivate 2FA service in my new mobile?