![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/Email_App_Eng.jpg)
DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong
![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/Uinversal_Prompt/2FA_U_prompt_2.png)
DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong
GitHub - PHPGangsta/GoogleAuthenticator: PHP class to generate and verify Google Authenticator 2-factor authentication
![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/browserWarning2.jpg)
DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong
![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/DuoPasscode-611x1024.jpg)
DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong
GitHub - scito/extract_otp_secrets: Extract one time password (OTP) secrets from QR codes exported by two-factor authentication (2FA) apps such as "Google Authenticator". The exported QR codes from authentication apps can be captured
![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/2fa-shared.jpg)
DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong
![DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong DUO Two Factor Authentication (2FA) | Information Technology Services Centre, The Chinese University of Hong Kong](https://www.itsc.cuhk.edu.hk/images/content/privacy-security/2fa/DuoPush-530x1024.jpg)