strong, two-factor authentication with mobile phones Standard phone and BlackBiPhone Google Android Windows Phone 7 PalmOS webOS Maemo Openmoko Universal Web App Windows Linux MacOS last update of this site: April 17th, 2024 News (2024-04-17): Tingfeng ported Mobile-OTP to Dart (see Links) (2024-01-03): blished a blie-OTP in Python on Github (see Links) (2022-10-01):