Barby creates barcodes.

Render QR codes with Rails 3

fir.im command tool, support iOS and Android

Rodauth is Ruby's most advanced authentication framework, designed to work in all rack applications. It's built using Roda and Sequel, but it can be used as middleware in front of web applications that use other web frameworks and database libraries. Rodauth aims to provide strong security for password storage by utilizing separate database accounts if possible on PostgreSQL, MySQL, and Microsoft SQL Server. Configuration is done via a DSL that makes it easy to override any part of the authentication process. Rodauth supports typical authentication features: such as login and logout, changing logins and passwords, and creating, verifying, unlocking, and resetting passwords for accounts. Rodauth also supports many advanced authentication features: * Secure password storage using security definer database functions * Multiple primary multifactor authentication methods (WebAuthn and TOTP), as well as backup multifactor authentication methods (SMS and recovery codes). * Passwordless authentication using email links and WebAuthn authenticators. * Both standard HTML form and JSON API support for all features.

Add the ability to use the Google Authenticator with ActiveRecord.

Provides Rails integration for Rodauth.

Glues rQRCode together with chunky_png

DANFE and DACTE pdf generator for Brazilian invoices and transportation docs.

Prawn/QRCode simplifies the generation and rendering of QRCodes in Prawn PDF documents.

DANFE pdf generator for Brazilian invoices.

A plugin that lets you document your servers in a datacenter

Health Cards implements SMART Health Cards, a secure and decentralized framework that allows people to prove their vaccination status or medical test results. It is based off of W3C Verifiable Credentials and FHIR R4 health data exchange standards. It allows conversion of clinical data into JWS which may then be embedded into QR codes, exported to smart-health-card files, or returned by a $health-card-issue FHIR operation.

https://github.com/0dayinc/pwn/README.md

QR-bills support for swiss payments, for full documentation please refer to github repo: https://github.com/damoiser/qr-bills

Ruby gem for Qrcode generation of Pix (Pagamento Instantâneo Brasileiro - Banco Central do Brasil)

A library for generating QR Codes for the e-invoice standard by ZATCA in Saudi Arabia.

"go/" like private link shortener for internal purpose

Time Based OTP/rfc6238 authentication for Devise

EPC QR code for SEPA payments in any format

This library uses ImageMagick and RQRCode to create QR codes with rounded corners