# qr code Published articles for qr code. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## ENILINX TICKEY - An ESP32-S3-based color e-Paper badge with open firmware (Crowdfunding) DevFeed: [ENILINX TICKEY - An ESP32-S3-based color e-Paper badge with open firmware (Crowdfunding)]() Original publisher: [Read original article]() Author: Debashis Das Published: 2026-09-17T00:00:34Z Content type: news Language: en Sources: [CNX Software - Embedded Systems News]() Topics: [ESP32-S3](), [e-ink](), [Microcontroller](), [Embedded Systems](), [Open Source]() Tags: [ble](), [bluetooth](), [display](), [e-paper](), [embedded](), [embedded-systems](), [epaper](), [esp32](), [esp32-s3](), [espressif](), [firmware](), [hardware](), [kickstarter](), [low-power](), [news](), [nfc](), [open-source](), [qr-code](), [screen](), [video]() ### AI overview ENILINX has launched the TICKEY, a 3.7-inch color e-paper badge and desk display based on the ESP32-S3. It includes Wi-Fi, Bluetooth, NFC, a rechargeable battery, and support for smartphone updates, with standard and Developer Edition storage options. The company describes the firmware as open source, but no repository or further implementation details were available when the article was written. ### Source excerpt ENIAC (operating as ENILINX) has launched the TICKEY, a 3.7-inch color e-Paper smart badge and desk display built around an ESP32-S3 MCU. The device features Wi-Fi, Bluetooth, and NFC connectivity, allowing users to update the screen from a smartphone without requiring continuous power to hold a static image. The display uses Modos' color e-paper technology to deliver 48+ native colors, with refresh times as fast as 3 seconds and sunlight readability. Measuring just 3.8mm thick and weighing 45 grams, TICKEY features an aluminum-alloy body and interchangeable faceplates, and supports NFC and QR code-based web profile sharing. The standard version includes 8MB of storage, whereas the Developer Edition offers 128MB for more advanced applications. These features make it suitable for desk reminders, event identification, digital business cards, and interactive maker projects. TICKEY specifications: Wireless MCU - ESP32-S3 Dual-core Tensilica LX7 microcontroller @ up to 240 MHz Wireless - 2.4 GHz 802.11n [...] The post ENILINX TICKEY - An ESP32-S3-based color e-Paper badge with open firmware (Crowdfunding) appeared first on CNX Software - Embedded Systems News. ## Search results are sending people to fake Bitrefill checkouts DevFeed: [Search results are sending people to fake Bitrefill checkouts]() Original publisher: [Read original article]() Author: Stefan Dasic Published: 2026-09-15T08:40:22Z Content type: news Language: en Sources: [Malwarebytes]() Topics: [Cryptocurrency](), [Bitcoin](), [Website]() Tags: [bitcoin](), [cryptocurrency](), [fraud](), [payments](), [phishing](), [qr-code](), [scam](), [scams](), [search](), [threat-intel]() ### AI overview Fake Bitrefill checkout pages are appearing in search results and copying the company's branding and payment flow. They persuade victims to send cryptocurrency to scammer-controlled addresses, with no goods delivered and little chance of recovering the payment. ### Source excerpt Fake Bitrefill checkout pages are appearing in search results and tricking people into sending cryptocurrency directly to scammers. ## 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. ## Announcing Bitbucket support for Sites and Functions DevFeed: [Announcing Bitbucket support for Sites and Functions]() Original publisher: [Read original article]() Author: Harsh Mahajan Published: 2026-09-03T00:00:00Z Content type: release Language: en Sources: [Appwrite Blog]() Topics: [bitbucket](), [Appwrite](), [Deployment](), [Git]() Tags: [announcements](), [atlassian](), [bitbucket](), [build](), [deployment](), [git](), [oauth](), [pull-request](), [qr-code]() ### AI overview Appwrite announces Bitbucket support for Sites and Functions. Users can connect a Bitbucket workspace and repository so pushes trigger builds and deployments, with branch previews, Bitbucket links, commit statuses, pull request comments, logs, preview URLs, and QR codes. ### Source excerpt Appwrite now deploys from Bitbucket. Connect a workspace, pick a repository, and every push builds a Site or Function, with links that resolve to Bitbucket. ## Announcing GitLab support for Appwrite Sites and Functions DevFeed: [Announcing GitLab support for Appwrite Sites and Functions]() Original publisher: [Read original article]() Author: Matej Bačo Published: 2026-09-03T00:00:00Z Content type: release Language: en Sources: [Appwrite Blog]() Topics: [Appwrite](), [GitLab](), [Deployment]() Tags: [announcements](), [cli](), [code](), [collaboration](), [deployment](), [git](), [gitlab](), [gitlab-ci](), [qr-code]() ### AI overview Appwrite announces GitLab support for Sites and Functions, allowing users to connect GitLab repositories and deploy directly, including repositories in GitLab groups. ### Source excerpt Connect a GitLab account to Appwrite and deploy Sites and Functions directly from your GitLab repositories, including projects that live inside GitLab groups. ## 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. ## Should Your SaaS Accept Crypto in 2026? An Honest Cost-Benefit Analysis DevFeed: [Should Your SaaS Accept Crypto in 2026? An Honest Cost-Benefit Analysis]() Original publisher: [Read original article]() Author: Ayush Agarwal Published: 2026-05-12T00:00:00Z Content type: article Language: en Sources: [Dodo Payments Blog]() Topics: [Software as a service](), [Blockchain](), [Solana](), [Ethereum]() Tags: [2026](), [analysis](), [blockchain](), [crypto](), [ethereum](), [extension](), [payment](), [payments](), [qr-code](), [saas](), [solana]() ### AI overview A guide for SaaS founders evaluating crypto payments in 2026. It focuses on stablecoins, processor-based USD settlement, the customer payment flow, and trade-offs including limited readiness among non-crypto-native consumers. ### Source excerpt Where crypto payments make sense for SaaS in 2026, the stablecoin reality, USD settlement, no chargebacks, and the trade-offs founders rarely think through. ## 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. ## 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. ## Easy way to upload, transform and deliver files and images (Sponsored) DevFeed: [Easy way to upload, transform and deliver files and images (Sponsored)]() Original publisher: [Read original article]() Author: David Walsh Published: 2025-03-24T22:58:30Z Content type: article Language: en Sources: [David Walsh]() Topics: [file](), [Image](), [Developer experience](), [Back end](), [Python]() Tags: [ascii](), [back-end](), [conversion](), [documentation](), [files](), [gif](), [images](), [python](), [qr-code](), [sponsored](), [uncategorized]() ### AI overview This sponsored developer article presents Filestack as a service for uploading, transforming, and delivering files and images. It describes a file-uploading interface, integrations with services such as Google Drive, Dropbox, GitHub, Facebook, and Instagram, a Python library for back-end uploads, documentation, and transformations for images, videos, and documents. ### Source excerpt Managing media is a really difficult task if you try to do all of it yourself, especially if the media comes from other sources. The file can be submitted in any state and size, but what if you need something really specific? You can code it all yourself or you can use an awesome service [...] The post Easy way to upload, transform and deliver files and images (Sponsored) appeared first on David Walsh Blog. ## Introducing ESP LowCode Matter: Simplified Device Development DevFeed: [Introducing ESP LowCode Matter: Simplified Device Development]() Original publisher: [Read original article]() Author: John Lee Published: 2025-02-27T00:00:00Z Content type: release Language: en Sources: [Blog on Developer Portal]() Topics: [Matter](), [Espressif](), [Development](), [SDKs]() Tags: [announce](), [blog](), [development](), [esp](), [esp32](), [espressif](), [firmware](), [flashing](), [low-code](), [matter](), [qr-code](), [sdk]() ### AI overview Espressif introduces ESP LowCode Matter, a solution that separates system firmware from application firmware. Espressif maintains the system firmware, including Matter protocol, OTA upgrade, and security complexity, while device makers customize hardware interfacing and application logic. ### Source excerpt At Espressif Systems, we are continuously striving to make device development easier for device makers. For Matter devices, we launched the ESP ZeroCode solution, simplifying the device development by removing the software development efforts. Allowing product customizations to a limited extent, ESP ZeroCode is well-suited for those who want to launch connected products without having to build them from scratch using the ESP Matter or the Connectedhomeip (CHIP) SDK. ## 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. ## The open source Kahoot alternative DevFeed: [The open source Kahoot alternative]() Original publisher: [Read original article]() Author: Tyler Shukert Published: 2024-05-09T07:00:00Z Content type: tutorial Language: en Sources: [Supabase Blog]() Topics: [Supabase](), [Open Source](), [Next.js](), [Authentication](), [Database](), [GitHub](), [QR Code]() Tags: [app](), [authentication](), [building](), [code](), [database](), [github](), [next-js](), [open-source](), [qr-code](), [realtime](), [security](), [server-side-rendering]() ### AI overview A guide to building an open-source Kahoot alternative for Supabase community meetups. The Next.js app uses Supabase authentication, database, and realtime features to support hosts and players, including anonymous sign-in, row-level security, QR-code entry, quizzes, scoring, and leaderboards. ### Source excerpt How we built a Kahoot alternative for the Supabase community meetups. ## Set Activity Screen Brightness without Permission DevFeed: [Set Activity Screen Brightness without Permission]() Original publisher: [Read original article]() Author: blundell Published: 2023-08-23T09:02:23Z Content type: tutorial Language: en Sources: [Blundell]() Topics: [Android](), [Code]() Tags: [android](), [androiddev](), [intermediate](), [legibility](), [override](), [permission](), [qr-code](), [reference](), [reference-tutorial-androiddev-qr-code-screen-brightness](), [screen-brightness](), [tutorial]() ### AI overview A tutorial explains how to temporarily adjust an Android Activity's screen brightness programmatically without requesting Android permissions. The brightness value ranges from 0 to 1, and the setting resets when the Activity is no longer visible. ### Source excerpt I wanted to brighten the screen, but all articles said you needed Android permissions. Codswallop! Here's how! The post Set Activity Screen Brightness without Permission first appeared on Blundell. ## 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? ## Introducing New Terminal API Customization Features DevFeed: [Introducing New Terminal API Customization Features]() Original publisher: [Read original article]() Author: Priscilla Wu Published: 2023-06-15T15:00:00Z Content type: release Language: en Sources: [Square Corner Blog RSS Feed]() Topics: [API](), [Terminal](), [Availability]() Tags: [announce](), [api](), [apis](), [availability](), [capture](), [checkout](), [collection](), [customization](), [developers](), [experience](), [features](), [flow](), [images](), [qr-code](), [screen](), [terminal]() ### AI overview Square announces the beta launch of Custom Workflows for Terminal API, allowing developers to add customizable screens and interactive checkout steps such as confirmations, signatures, contact collection, multiple-choice menus, and QR codes. The article also announces general availability of Custom Idle Screen, which lets sellers display rotating images and their business name on Square Terminal. ### Source excerpt Customize the checkout experience with the newest features ## 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. ## Tracker Beeper DevFeed: [Tracker Beeper]() Original publisher: [Read original article]() Published: 2022-08-29T08:45:14Z Content type: article Language: en Sources: [Bert Hubert's writings]() Topics: [data](), [Google](), [Development](), [Code](), [Linux](), [osx](), [Raspberry Pi](), [QR Code](), [Android](), [iOS]() Tags: [android](), [code](), [development](), [google](), [ios](), [linux](), [logs](), [osx](), [privacy](), [qr-code](), [raspberry-pi](), [send](), [sites](), [tracker]() ### AI overview The article describes Tracker Beeper, a rough command-line tool that makes sounds when websites send data to Google, Facebook, and other trackers. It presents examples involving a Dutch government jobs site and discusses plans for broader platform support and live demonstrations. ### Source excerpt A week ago, I finally got round to implementing an idea I'd been toying with for years: what if your computer made a little bit of noise every time it sent data to Google? From studying logs, I'd long known just how many sites send all your visits and clicks to (at least) Google, but a log that you have to manually create first and then analyze is not very dramatic. ## 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 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 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. ## Removing Old Dashboard DevFeed: [Removing Old Dashboard]() Original publisher: [Read original article]() Author: Shai Almog Published: 2020-08-27T00:00:00Z Content type: news Language: en Sources: [CodeName One]() Topics: [dashboards](), [migration](), [Cloud](), [Website]() Tags: [cloud](), [html](), [migration](), [qr-code](), [ui]() ### AI overview Codename One announces that it will remove the old dashboard on September 18 in favor of the build cloud as part of a complete website rewrite. The post asks users to report missing features and identifies email build results and QR-code OTA installation as planned support. ### Source excerpt We announced a while back that we're working on a new website. This work was 90% complete but we decided to scrap it in favor of a complete rewrite of the site. That means some links might break and some functionality might be impacted but this is a crucial change for the continued growth of the company. One thing that we plan to remove entirely is the old dashboard. It will be removed on September 18th in favor of the build cloud. Please let us know of any missing features or problems so we can address them in time for the migration. [Next page]()