GitHub - marcelkliemannel/kotlin-onetimepassword: A Kotlin one-time password library to generate "Google Authenticator", "Time-based One-time Password" (TOTP) and "HMAC-based One-time Password" (HOTP) codes based on RFC 4226 and 6238.
![android - Firebase phone auth not initiating OTP only in release mode but works on Debug mode even after added sha1 for release mode - Stack Overflow android - Firebase phone auth not initiating OTP only in release mode but works on Debug mode even after added sha1 for release mode - Stack Overflow](https://i.stack.imgur.com/f9ZCP.png)
android - Firebase phone auth not initiating OTP only in release mode but works on Debug mode even after added sha1 for release mode - Stack Overflow
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Excelsecu One Time Password Portable And Easy Otp Anthentication Token Totp/ocra Sha1/sha256 Long-life Hardware Pin Protection - Ic/id Card - AliExpress
![Configuring the Time-Based One-Time Password (TOTP) Tool for Two-Factor Authentication Using Google Authenticator - NetIQ® CloudAccess and MobileAccess Installation and Configuration Guide Configuring the Time-Based One-Time Password (TOTP) Tool for Two-Factor Authentication Using Google Authenticator - NetIQ® CloudAccess and MobileAccess Installation and Configuration Guide](https://www.netiq.com/documentation/cloudaccess-2-2/install_config/graphics/totp-reg-dev_a.png)
Configuring the Time-Based One-Time Password (TOTP) Tool for Two-Factor Authentication Using Google Authenticator - NetIQ® CloudAccess and MobileAccess Installation and Configuration Guide
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