# QR Code A machine-readable code with documented features and standards, supported by QR Code creation, scanning, and generation software. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## First Clear Visuals Of Meta's Project Phoenix Headset Found In Quest Firmware DevFeed: [First Clear Visuals Of Meta's Project Phoenix Headset Found In Quest Firmware]() Original publisher: [Read original article]() Author: Luna Published: 2026-09-10T22:53:46Z Content type: news Language: en Sources: [UploadVR]() Topics: [Meta](), [phoenix](), [App](), [QR Code](), [Zip]() Tags: [devices](), [headsets-tech](), [meta](), [phoenix](), [qr-code](), [sensors](), [zip]() ### AI overview Meta's HorizonOS Prescription Lens app now contains clear visuals of the Project Phoenix headset. The images show prescription lens attachment and QR-code scanning, a slim glasses-style design with visible sensors, and a cable connecting the headset to a compute puck. ### Source excerpt The first visuals of Meta's Project Phoenix headset have been found in Horizon OS firmware, revealing a slim design with a tether for the compute puck. ## \[Crypto\] Time-based one-time password (TOTP) for 2FA, part I DevFeed: [\[Crypto\] Time-based one-time password (TOTP) for 2FA, part I]() Original publisher: [Read original article]() Published: 2026-09-09T22:00:00Z Content type: tutorial Language: en Sources: [Dennis Yurichev]() Topics: [passwords](), [QR Code](), [Google](), [Python](), [Unix](), [App](), [email](), [Code]() Tags: [account](), [app](), [argument](), [backup](), [code](), [crypto](), [env-file-security](), [github](), [google](), [password](), [protection](), [python](), [run](), [server](), [smartphone](), [unix]() ### AI overview This tutorial explains how time-based one-time passwords work for two-factor authentication. It covers importing a base32-encoded secret from a QR code into Google Authenticator, generating 6-digit login codes, and calculating them with HMAC-SHA-1 from the secret and Unix time. It also discusses backup codes and securely storing TOTP secrets separately from passwords. ### Source excerpt [Crypto] Time-based one-time password (TOTP) for 2FA, part I ## CodeScanner.scan(): Barcode Scanning Without Rebuilding the Camera Pipeline DevFeed: [CodeScanner.scan(): Barcode Scanning Without Rebuilding the Camera Pipeline]() Original publisher: [Read original article]() Author: Shai Almog Published: 2026-08-26T00:00:00Z Content type: release Language: en Sources: [CodeName One]() Topics: [Barcode](), [QR Code](), [webcam](), [Code]() Tags: [camera](), [code](), [component](), [on-device](), [pipeline](), [vision]() ### AI overview Codename One adds CodeScanner and VisionCameraView, higher-level APIs for full-screen barcode scanning and embedded live vision analysis. The update also introduces typed results, coordinate helpers, image bridging, and analyzer-specific native dependency selection. ### Source excerpt CodeScanner and VisionCameraView put full-screen scanning and embedded live analysis above Codename One's on-device vision APIs, with typed results and simulator scripting. ## How QR-code phishing can slip past corporate security measures DevFeed: [How QR-code phishing can slip past corporate security measures]() Original publisher: [Read original article]() Author: Phil Muncaster Published: 2026-08-17T09:00:00Z Content type: article Language: eng Sources: [WeLiveSecurity]() Topics: [QR Code](), [Cybersecurity](), [Social engineering]() Tags: [business-security](), [corporate](), [cybersecurity](), [phishing](), [security]() ### AI overview The article explains how QR-code phishing ("quishing") can evade corporate defenses by hiding malicious URLs and directing employees to less-protected mobile devices. ### Source excerpt Quishing has become a popular alternative to traditional phishing. Here's how businesses can close the gap. ## ESET Threat Report H1 2026 DevFeed: [ESET Threat Report H1 2026]() Original publisher: [Read original article]() Author: Jiří Kropáč Published: 2026-07-08T08:45:00Z Content type: article Language: en Sources: [WeLiveSecurity]() Topics: [ESET research](), [Threat Research](), [Artificial Intelligence](), [Generative AI](), [Malware](), [Android](), [ClickFix](), [QR Code](), [ransomware](), [Social engineering](), [Endpoint Security & XDR](), [Security]() Tags: [ai](), [android](), [clickfix](), [code](), [eset-research](), [generative-ai](), [malware](), [ransomware](), [research](), [security](), [social-engineering](), [threat-report]() ### AI overview ESET's H1 2026 threat report describes attackers adapting established techniques across new platforms and behaviors. It highlights the expanding abuse of AI skills, PromptSpy Android malware using Google Gemini, the spread of ClickFix and QR-code phishing, and continued ransomware activity involving EDR killers. ### Source excerpt A view of the H1 2026 threat landscape as seen by ESET telemetry and from the perspective of ESET threat detection and research experts. ## Accepting WeChat Pay and Alipay: The China Payment Stack for Global SaaS DevFeed: [Accepting WeChat Pay and Alipay: The China Payment Stack for Global SaaS]() Original publisher: [Read original article]() Author: Ayush Agarwal Published: 2026-05-12T00:00:00Z Content type: tutorial Language: en Sources: [Dodo Payments Blog]() Topics: [Software as a service](), [QR Code](), [Web]() Tags: [billing](), [china](), [cross-border-payments](), [payments](), [qr-code](), [saas]() ### AI overview This guide explains how global SaaS businesses can accept WeChat Pay and Alipay from customers in China. It covers QR-code wallet payments, the limitations of card-only checkout, cross-border payment constraints, and USD versus CNY billing. ### Source excerpt Why global SaaS need WeChat Pay and Alipay for Chinese customers, how QR code mobile payments work, USD versus CNY billing, and the integration realities. ## PIX Payments for Brazilian SaaS: A Founder's Integration Guide DevFeed: [PIX Payments for Brazilian SaaS: A Founder's Integration Guide]() Original publisher: [Read original article]() Author: Ayush Agarwal Published: 2026-05-11T00:00:00Z Content type: tutorial Language: en Sources: [Dodo Payments Blog]() Topics: [Software as a service](), [Transactions](), [QR Code](), [real-time]() Tags: [brazil](), [cost](), [guide](), [payments](), [qr-code](), [real-time](), [saas](), [transactions](), [trust]() ### AI overview A practical guide to integrating PIX payments for SaaS products targeting Brazilian customers, covering the payment flow, real-time transfers, BRL settlement, subscription considerations, and production integration patterns. ### Source excerpt Why PIX is now non-negotiable for Brazil-targeted SaaS, how the QR code flow works, BRL settlement realities, and the integration patterns that work in production. ## How Multi-Factor Authentication Helps Keep Your Discord Account Safe DevFeed: [How Multi-Factor Authentication Helps Keep Your Discord Account Safe]() Original publisher: [Read original article]() Author: Locke Published: 2026-03-27T00:00:00Z Content type: tutorial Language: en Sources: [Discord Blog]() Topics: [MFA](), [Discord](), [Authentication](), [Passkeys](), [Security](), [QR Code]() Tags: [authentication](), [blog](), [discord](), [how-to](), [security]() ### AI overview This Discord blog post explains how multi-factor authentication, passkeys, authenticator apps, SMS backup authentication, and QR code login can help protect Discord accounts from account takeover. ### Source excerpt A Discord account is more than just your username and avatar. That's why it's important to help keep your account safe and secure by using Multi-Factor Authentication, SMS Backup Authentication & QR Code Login. Learn how to keep your account more secure in the following blog post! ## A brush with online fraud: What are brushing scams and how do I stay safe? DevFeed: [A brush with online fraud: What are brushing scams and how do I stay safe?]() Original publisher: [Read original article]() Author: Phil Muncaster Published: 2025-12-23T10:00:00Z Content type: article Language: en Sources: [WeLiveSecurity]() Topics: [Cybercrime](), [data](), [QR Code](), [Malware](), [online privacy]() Tags: [cybercrime](), [data-breaches](), [fraud](), [identity](), [malware](), [phishing](), [qr-code](), [scams]() ### AI overview The article explains brushing scams, in which fraudsters send unsolicited low-value packages to manipulate marketplace ratings and reviews. It warns that such activity may indicate exposed personal data, identity-fraud risk, or phishing and malware threats delivered through QR codes. ### Source excerpt Have you ever received a package you never ordered? It could be a warning sign that your data has been compromised, with more fraud to follow. ## Bloco's 2024 Android app development update and return to client work DevFeed: [Bloco's 2024 Android app development update and return to client work]() Original publisher: [Read original article]() Author: Sérgio Published: 2025-01-09T18:12:32Z Content type: opinion Language: en Sources: [Blog - Bloco]() Topics: [android-apps](), [Android](), [Google Play](), [QR Code](), [App]() Tags: [about](), [android](), [android-apps](), [app](), [dependencies](), [google-play](), [performance](), [qr-code](), [update]() ### AI overview Bloco describes its 2024 shift toward developing Android apps, including the release of a Caderno remake and the launch of QR Friend. The company also fixed bugs, updated dependencies, improved performance, experimented with Google Play listings, and returned to client work while continuing to invest in its apps. ### Source excerpt You may have noticed we've been sharing less about us. At the end of 2023 we decided to shake things up at Bloco. ## Introducing our new QR Friend app DevFeed: [Introducing our new QR Friend app]() Original publisher: [Read original article]() Author: Sérgio Published: 2024-10-17T16:33:21Z Content type: release Language: en Sources: [Blog - Bloco]() Topics: [QR Code](), [App](), [Android](), [Google Play](), [Risk]() Tags: [android](), [app](), [dark-mode](), [google-play](), [projects](), [qr-code](), [risk]() ### AI overview Bloco released QR Friend, an Android app for scanning QR codes without ads or accounts. It supports WiFi, contact, GPS location, and barcode scans, with scan history, favorites, optional premium features, and link safety checks using Google's Web Risk service. ### Source excerpt We released a new app for scanning QR codes: QR Friend. ## Using VPN during MDNS server development DevFeed: [Using VPN during MDNS server development]() Original publisher: [Read original article]() Author: info@jeroenmols.com (Jeroen Mols) Published: 2023-07-24T00:00:00Z Content type: tutorial Language: en Sources: [Jeroen Mols]() Topics: [Virtual Private Network](), [Mobile](), [App](), [Android](), [Server](), [Chrome](), [QR Code](), [Open Source]() Tags: [android](), [app](), [blogs](), [browser](), [fullstack](), [mobile](), [open-source](), [qr-code](), [server](), [tips](), [vpn]() ### AI overview A tutorial on accessing a mobile development web server over mDNS while using a VPN. It explains split tunneling and presents an open-source Android URL-interceptor app that redirects local-domain links to a browser configured for development without the VPN. ### Source excerpt Are you using a VPN on your mobile device? Do you need to disable that to access your development web server over MDNS on your mobile device? ## Recap: Square Unboxed 2023 DevFeed: [Recap: Square Unboxed 2023]() Original publisher: [Read original article]() Author: Tristan Tyler Published: 2023-06-22T07:00:00Z Content type: article Language: en Sources: [Square Corner Blog](), [Square Corner Blog RSS Feed]() Topics: [API](), [Android](), [dashboards](), [QR Code]() Tags: [android](), [announcements](), [api](), [apis](), [event](), [recap]() ### AI overview A recap of Square Unboxed 2023 covering platform updates, discussions about AI and industry trends, and announcements for Terminal API Custom Workflows, Terminal API Custom Idle Screen, and POS API Tap to Pay on Android. ### Source excerpt Top highlights from this year's event ## A short overview of Passkeys, and how to use them to secure your infrastructure with Teleport DevFeed: [A short overview of Passkeys, and how to use them to secure your infrastructure with Teleport]() Original publisher: [Read original article]() Author: ben@goteleport.com (Ben Arent) Published: 2023-01-12T00:00:00Z Content type: tutorial Language: en Sources: [Teleport]() Topics: [Passkeys](), [Authentication](), [WebAuthn](), [Security](), [API](), [QR Code]() Tags: [android](), [authentication](), [ios](), [private-key](), [qr-code](), [security](), [verification](), [windows-11]() ### AI overview This article explains passkeys as a passwordless authentication method for securing infrastructure with Teleport. It describes cross-platform and cross-browser login, cloud storage backed by a phone's secure enclave, and FIDO2 proximity proof using Bluetooth when a QR code is scanned. ### Source excerpt A short overview of Passkeys, and how to use them to secure your infrastructure with Teleport. ## Multi-factor Authentication via Row Level Security Enforcement DevFeed: [Multi-factor Authentication via Row Level Security Enforcement]() Original publisher: [Read original article]() Author: Joel Lee; Kang Ming Tay; Stojan Dimitrovski Published: 2022-12-14T07:00:00Z Content type: article Language: en Sources: [Supabase Blog]() Topics: [MFA](), [Authentication](), [Security](), [Supabase](), [QR Code](), [SVG](), [Single sign-on (SSO)]() Tags: [auth](), [authentication](), [code](), [dogfooding](), [event](), [feature](), [flow](), [generate](), [identity](), [mfa](), [password](), [passwords](), [security](), [sso](), [svg](), [verification](), [verify]() ### AI overview Supabase introduces multi-factor authentication for all users and describes its implementation with Time-Based One Time Passwords (TOTP). The article explains enrollment, QR-code setup, challenge creation, and verification using six-digit codes, and mentions Single Sign On (SSO) on the dashboard as preparation for SAML. ### Source excerpt MFA Auth with enforcement via RLS ## Digital payments are surging in informal BNPL; Under Rs 200 payments lead the surge DevFeed: [Digital payments are surging in informal BNPL; Under Rs 200 payments lead the surge]() Original publisher: [Read original article]() Author: Team OkCredit Published: 2022-05-23T11:27:01Z Content type: article Language: en Sources: [OkCredit - Medium]() Topics: [digital](), [QR Code](), [data](), [Transactions]() Tags: [bnpl](), [digital](), [digital-payment](), [payments](), [qr-code](), [retail](), [small](), [store](), [upi]() ### AI overview The article examines digital payment adoption among informal businesses using OkCredit data and customer examples. It reports that UPI, especially QR-code payments, is widely used for small transactions, while cash remains significant. ### Source excerpt Photo by David Dvořáček on Unsplash Prior to 2019, the biggest pain in Nitesh Bansal's life was getting customers to pay their dues. Bansal runs a Kirana cum mobile recharge store at Surat in Gujarat. Customers would keep on buying things at his store over and above an existing credit line, inflating the dues. " The typical excuses would be- "Forgot cash at home", "Settle the current bill, will pay the dues later" , "Don't have change" etc. In June 2019, Bansal latched on to one of the UPI platforms and since then things have changed. Digital payments have made his life a lot easier, by making credit settlements fuss-free. His customers now scan the QR code or pay him via Paytm. That doesn't mean he has gone completely digital; 60% of the payments at his store still happen in cash- a reality that has also been reflected in OkCredit's data UPI and within that QR codes have been the heroes of this digital revolution. Be it the neighbourhood vegetable vendor or the street food hawker, it isn't uncommon to find QR codes pasted on their shops and carts. The sheer convenience of scanning a code rather than looking for change or navigating through multiple apps makes QR codes a clear favourite among small and micro businesses. In fact, 90% of online payments happening on OkCredit take place through UPI, giving it a significant lead over all other forms of payments. While convenience is the primary reason, it has also been seen that shops that accept digital payments have a better control on cashflows than those who don't. Three shops away from Bansal's store, Ajay Sirohi's "Beena recharge point" suffers regularly because of non-paying customers. Despite several customers requesting him to add digital payments at the store, Sirohi hasn't done it for fear of cyber frauds. Payments are always an issue at his store, forcing him to resort to borrowing from his friends. Interestingly, for shops accepting digital payments, smaller denomination transactions are mostly happen throu ## Announcing Cash App Pay for Developers DevFeed: [Announcing Cash App Pay for Developers]() Original publisher: [Read original article]() Author: Leher Pathak Published: 2022-05-19T17:00:00Z Content type: release Language: en Sources: [Square Corner Blog](), [Square Corner Blog RSS Feed]() Topics: [SDKs](), [API](), [Web](), [QR Code](), [dashboards](), [Code](), [App]() Tags: [api](), [apis](), [code](), [developers](), [payment](), [qr-code](), [sdk](), [web]() ### AI overview Square announces that developers and partners can add Cash App Pay to online checkout flows through the Square Web Payments SDK and Square Checkout API. The release supports payment from a Cash App balance or linked bank account, with QR-code scanning on desktop and automatic app opening on mobile. ### Source excerpt Offer an innovative online payment experience through Cash App ## Recap: Square Unboxed 2022 DevFeed: [Recap: Square Unboxed 2022]() Original publisher: [Read original article]() Author: Sneha Patel Published: 2022-05-13T17:00:00Z Content type: news Language: en Sources: [Square Corner Blog](), [Square Corner Blog RSS Feed]() Topics: [Developer Platform](), [API](), [SDKs](), [Availability](), [QR Code](), [Finance]() Tags: [api](), [apis](), [availability](), [conference](), [developer-platform](), [payments](), [qr-code](), [recap](), [sdk]() ### AI overview A recap of Square Unboxed 2022 announces Cash App Pay for developers, Bookings API general availability, a refreshed Checkout API, and new Terminal API features in public beta. The event also covered commerce experiences, demonstrations, workshops, and Square's developer platform vision. ### Source excerpt Top highlights of Square Unboxed 2022 ## Tutorial: SSH 2fa using Google Authenticator DevFeed: [Tutorial: SSH 2fa using Google Authenticator]() Original publisher: [Read original article]() Author: info@goteleport.com (Troy Desjardins) Published: 2022-01-07T00:00:00Z Content type: tutorial Language: en Sources: [Teleport]() Topics: [ssh](), [MFA](), [Authentication](), [Linux](), [QR Code](), [Android](), [iOS](), [Ubuntu]() Tags: [android](), [authentication](), [how-to](), [linux](), [mobile](), [qr-code](), [ssh](), [tutorial](), [ubuntu]() ### AI overview This tutorial explains how to configure SSH two-factor authentication on a Linux server using Google Authenticator PAM and time-based one-time passwords. It covers prerequisites, PAM and SSH daemon configuration, service restart, and QR-code setup for the mobile authenticator app. ### Source excerpt This blog will walk you step-by-step through how to set up TOTP SSH 2fa (two-factor authentication) using Google Authenticator. ## QR Reader Secure - Privacy-Focused and Secure QR Reader DevFeed: [QR Reader Secure - Privacy-Focused and Secure QR Reader]() Original publisher: [Read original article]() Author: Marco Gomiero Published: 2020-07-28T00:00:00Z Content type: release Language: en Sources: [Posts on Marco Gomiero]() Topics: [QR Code](), [App](), [Open Source]() Tags: [app](), [github](), [open-source](), [permission](), [play-store](), [privacy](), [qr-code]() ### AI overview The article announces QR Reader Secure, a simple QR-scanning app developed in response to concerns about intrusive ads and excessive permissions in other QR readers. It requests only camera access, contains no ads or trackers, keeps scanned data on the phone, is free on the Play Store, and is open source on GitHub. ### Source excerpt Last week my parents asked me to download to their phones a simple QR Reader. So I opened the Play Store and I started to search an easy to use application, without lot's of noise (oh, I mean intrusive ads..) and without ulterior motives. Well, I wandered around the Play Store for an hour without finding an answer. Some apps will require all the imaginable permission only to scan a QR code. Come on, why do you need my contacts and my location for the scanning? 🤬 ## Your next upgrade deserves an upgrade DevFeed: [Your next upgrade deserves an upgrade]() Original publisher: [Read original article]() Published: 2020-06-09T00:00:00Z Content type: article Language: en Sources: [Signal Blog]() Topics: [iOS](), [iphone](), [migration](), [QR Code](), [data]() Tags: [integrity](), [ios](), [iphone](), [local](), [migration](), [new-feature](), [privacy]() ### AI overview Signal for iOS introduces a secure device-to-device transfer feature for moving an account and message history from an existing iPhone or iPad to a new one. The transfer uses end-to-end encryption and a local connection, with QR-code pairing and integrity checks. ### Source excerpt Signal iOS now includes a new feature that makes it possible to switch to a brand-new iPhone or iPad while securely transferring Signal information from your existing iOS device. As with every new Signal feature, the process is end-to-end encrypted and designed to protect your privacy. Transfers also occur over a local connection (similar to AirDrop), so even large migrations can be completed quickly. Read more... ## RainMaker Projects: Firmware Considerations DevFeed: [RainMaker Projects: Firmware Considerations]() Original publisher: [Read original article]() Author: John Lee Published: 2020-05-01T00:00:00Z Content type: article Language: en Sources: [Blog on Developer Portal]() Topics: [Esp Rainmaker](), [Embedded Software Dev](), [Wi-Fi](), [QR Code](), [Security](), [Framework](), [Android](), [iOS]() Tags: [android](), [blog](), [devices](), [esp](), [firmware](), [ios](), [qr-code](), [rainmaker](), [security](), [wi-fi]() ### AI overview This article explains firmware considerations for ESP RainMaker projects, including Wi-Fi provisioning, proof-of-possession security through device-specific QR codes, factory reset using NVS, and manufacturing-specific device data. ### Source excerpt Recently we released ESP RainMaker that easily allows makers to build connected devices. Beyond the part of connecting with the phone applications, the way the applications are structured makes it much easier to build an easy to distribute firmware. Many of these features are the guidelines that are part of the ESP-Jumpstart framework. Let's look at some of these features. ## Devcon On-Chain Raffle & Auction Participants DevFeed: [Devcon On-Chain Raffle & Auction Participants]() Original publisher: [Read original article]() Author: Devcon Published: 2019-09-12T00:00:00Z Content type: article Language: en Sources: [Ethereum Foundation Blog]() Topics: [Ethereum](), [QR Code]() Tags: [devcon](), [ethereum](), [events](), [nfts](), [qr-code](), [ticketing]() ### AI overview Ethereum's first on-chain Devcon raffle and auction ticket distributions have concluded. Participants will receive an ERC-721 NFT at the address used for the sale and can verify it through EtherCards.Devcon.org to generate a QR code for entry. ### Source excerpt With the the first-ever on-chain Devcon ticket distributions now behind us, it's time to talk ticket distribution for all participants! First, we'd like to offer a sincere "Thank you" to everyone that participated in these first trial rounds for on-chain Devcon ticketing. Thanks to your support, we're confident in... ## Meltdown and Spectre Server Updates and Codename One Feature Updates DevFeed: [Meltdown and Spectre Server Updates and Codename One Feature Updates]() Original publisher: [Read original article]() Author: Shai Almog Published: 2018-01-16T00:00:00Z Content type: article Language: en Sources: [CodeName One]() Topics: [Vulnerabilities](), [Server](), [IO](), [Objective-C](), [Java](), [iOS](), [Barcode](), [QR Code](), [simulator](), [API]() Tags: [announcement](), [api](), [blog](), [io](), [ios](), [java](), [objective-c](), [qr-code](), [servers](), [simulator](), [updates](), [vulnerabilities]() ### AI overview The post announces server updates in response to the Meltdown and Spectre chip vulnerabilities, with possible short-term downtime and limited expected impact on build speed because IO, rather than CPU speed, is the main bottleneck. It also mentions new Codename One libraries for Objective-C interoperability and Scandit barcode and QR code scanning, plus a push notification simulator feature. ### Source excerpt I've been so busy I just don't have time to blog as much as I should. I do hope next month will be better in this regard (more on that below) but right now I have to make an important announcement. There are new chip vulnerabilities I'm sure you heard a lot about specifically Meltdown & Spectre. Thankfully we are at a layer that shouldn't be impacted by these issues but we need to update our servers and will be doing so over the course of the next few days (possibly more as patches get updated). [Next page]()