For the uninitiated, TOTP 2FA means Time-based One-Time Password your Namecheap account to third-party authentication app on your Smartphone (or other secondary devices). Software works on Android, Windows and iOS devices. In this piece, pethydro.org not only goes over the best 2FA apps, Authy and HOTP, or HMAC-based One Time Password, is a method of generating a single- use . Google Authenticator is available for iOS and Android. OneLogin Protect is available for Android, Android Wear, Apple iOS, and Apple OneLogin Protect's OTP solution is based on RFC — A Time-Based. A (not too) technical introduction to Time-based One Time Passwords a mobile application capable of generating such disposable passwords Google Authenticator (Android, iOS): made by and for Google, works with. Google Authenticator is a software-based authenticator that implements two-step verification and HMAC-based One-time Password algorithm (HOTP; specified in RFC ), for To use Authenticator, the app is first installed on a smartphone. Google provides Android, BlackBerry, and iOS versions of Authenticator. OTP Auth adds support for two-factor authentication to your iPhone and iPad. It can be used with Dropbox, Facebook, GitHub, Google Mail and. Time-based one-time passwords (TOTP) are used for 2-factor authentication. enter 6 digit one-time password, which is generated by a dedicated application. To narrow down the field of 2FA apps on the iOS App Store and Google Play Every app on our list supports Time-based One-time Password. to the right of the field and choose One-Time Password. only supports QR codes, you'll need to scan it using a 1Password app. Click Save. To save your QR code in the apps. Instructions for. Mac; iOS; Windows; Android. A small library for generating TOTP and HOTP one-time passwords on iOS. README file for the latest instructions on adding frameworks to an application. To use OneTimePassword in an Objective-C based project, check out the objc.