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QR Code

QR Code stands for Quick Response Code and is a type of matrix barcode (or two-dimensional barcode) first designed in 1994 for the automotive industry in Japan. QR Codes are now widely used in various applications such as product tracking, item identification, document management, and marketing due to their fast readability and greater storage capacity compared to standard UPC barcodes. This topic covers the creation, usage, and applications of QR Codes, including how they are generated and read by devices. It also explores the technology behind QR Codes, their standards, and their impact on industries such as retail, logistics, and mobile payments.

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Bails

Bails is a Bitcoin solution protecting against surveillance, censorship, and confiscation. It installs Bitcoin Core on the encrypted Persistent Storage of Tails, creates and recovers Bitcoin Core wallets from Codex32 (BIP93) seed backups, and creates backup Bails USB sticks and shareable blank Bails USB sticks. Learn more in README.md.

  • Updated Jun 11, 2024
  • Shell

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 by camera, read from images, or read from text files. The secrets can be exported to JSON or CSV, or printed as QR codes to console.

  • Updated Jun 10, 2024
  • Python

Created by Denso Wave

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barcode data-collection mobile-payments scanning