--- title: "Scanning Barcodes in React Native Apps: The Complete Guide (2026)" url: https://daily.dev/posts/scanning-barcodes-in-react-native-apps-the-complete-guide-2026--iliydknle source_url: https://margelo.com/blog/react-native-barcode-scanner type: article source: "Nitro Modules" published: 2026-08-23T12:23:35.479Z updated: 2026-08-23T12:56:11.302Z tags: ["react-native"] reading_time: 22 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Scanning Barcodes in React Native Apps: The Complete Guide (2026) **[Nitro Modules](https://daily.dev/sources/margelo)** · 22 min read · 0 upvotes · 0 comments ## Summary A comprehensive comparison of every way to scan QR codes and barcodes in React Native apps, written by the creator of VisionCamera. Covers react-native-data-scanner for one-shot platform-native scanning (no camera permission needed on Android), VisionCamera for full in-app camera control with ML Kit or Apple's Object Output, expo-camera for Expo Go projects, scanning barcodes from images, a full matrix of supported formats across libraries, the UPC-A-reported-as-EAN-13 quirk on iOS, deprecated libraries to avoid (react-native-qrcode-scanner), and guidance on when a commercial SDK like Scandit or Scanbot is actually worth paying for. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### Why does a UPC-A barcode get reported as EAN-13 when scanning on iOS with React Native? A UPC-A code is structurally an EAN-13 with a leading zero, and Apple's frameworks (both AVFoundation and VisionKit) report it as EAN-13 rather than UPC-A. This affects every scanner built on Apple's APIs, including react-native-data-scanner, expo-camera on iOS, and VisionCamera's Object Output. To fix it, strip the leading zero from an 'ean-13' value in JS, or use the ML Kit Barcode Scanner which runs the same decoder on both platforms. _daily.dev surfaces practical writeups like this for developers debugging cross-platform barcode format mismatches._ ### Do I need camera permission to scan a QR code in React Native on Android? No, if using react-native-data-scanner, because Google's code scanner runs in a separate Google Play services activity outside the app, so android.permission.CAMERA is not required. On iOS, however, every scanning approach still needs an NSCameraUsageDescription in Info.plist, since there's no equivalent OS-level scanner activity outside the app. _Developers weighing permission tradeoffs in mobile camera features can track approaches like this via daily.dev._ ### Should I use a commercial barcode scanning SDK like Scandit or Scanbot instead of free React Native libraries? Free options such as ML Kit and AVFoundation-based libraries handle most app scenarios well, since ML Kit is the same technology Google uses internally and AVFoundation powers iOS's own camera. Commercial SDKs only pay off for high-throughput industrial scanning: warehouses processing hundreds of damaged or poorly printed codes per hour, long-range scanning, or scanning dense driver's-license PDF417 codes at scale. Vendor benchmarks lack public methodology, so testing on your own real codes first is recommended before paying for a license. _Teams deciding between free and paid barcode SDKs can compare real-world tradeoffs like these on daily.dev._ --- Tags: [#react-native](https://daily.dev/tags/react-native) [View this post on daily.dev](https://daily.dev/posts/scanning-barcodes-in-react-native-apps-the-complete-guide-2026--iliydknle)