Scan barcodes continuously without restarting the scanner after each result. barKoder keeps the scanning session open, lets you decide how soon the same code may repeat, and runs on Android, iOS, the web and every major cross-platform framework.
Continuous scanning lets users scan barcode after barcode without manually restarting the scanner after each successful read. The camera stays open, results keep arriving in your app, and you control how the same barcode is handled when it appears again. It suits high-volume work where every extra tap slows the line down.
Any workflow where users move from one item to the next:
For logistics teams, read How to evaluate a barcode scanner SDK for logistics and warehouse applications.
In continuous mode the same barcode can stay in view for several frames. The thresholdBetweenDuplicatesScans setting decides what happens, and the right value is a business decision: a stock count wants each code once, a checkout may need the same product twice.
| Value | Behavior | Fits |
|---|---|---|
| -1 | Ignores duplicates completely. Each barcode is scanned only once. | Counting unique items |
| 0 | Allows scanning the same barcode continuously, with no delay between scans. | Repeated reads of one code |
| n > 0 | Allows scanning the same barcode again only after n seconds. | Scanning the same product twice on purpose |
The Web SDK sets the delay in milliseconds with Barkoder.setDuplicatesDelayMs().
Turn off closing the session on result and set the duplicate threshold. These examples are copied from the barKoder docs.
bkdView.config.isCloseSessionOnResultEnabled = false
bkdView.config.thresholdBetweenDuplicatesScans = 0 // it can take values -1, or n > 0_barkoder.setCloseSessionOnResultEnabled(false);
_barkoder.setThresholdBetweenDuplicatesScans(0); // it can take values -1, or n > 0On React Native, the docs recommend turning off image and thumbnail results during continuous scanning, because returning them on Android causes performance issues:
barkoder.setImageResultEnabled(false);
barkoder.setBarcodeThumbnailOnResultEnabled(false);Barkoder.setContinuous(true);Or through configureBarkoder:
let config = new Barkoder.configTypes.BarkoderConfig({
closeSessionOnResultEnabled: false
});
Barkoder.configureBarkoder(config);In the web scanner, the decoder pauses after each result while the camera preview keeps running. Unpause it in the result callback of startScanner:
Barkoder.setPauseDecoding(false);Continuous scanning examples: Android, iOS, Web, Flutter, React Native, Capacitor, Cordova, .NET MAUI and NativeScript.
All three keep the scanner open. Pick the one that matches how many codes the user sees at once and how much feedback they need.
| Mode | What the user does | Key settings |
|---|---|---|
| Continuous scanning | Moves the camera from one barcode to the next | Close session on result off, duplicate threshold |
| Batch MultiScan | Captures many barcodes in one camera view | Maximum results count above 1, multi-code caching |
| AR Mode | Sees an overlay on every code and selects the ones they need | AR mode, header display, Full HD and Slow decoding |
Cashiers scan items in rapid succession without pausing for each barcode, which shortens queues. During inventory audits, staff scan whole shelves or sections and cut stocktaking time.
Barcode scanning for retail →
Workers scan boxes and pallets on the move, without stopping for each barcode. Receiving and dispatch keep moving, with fewer delays and errors.
Barcode scanning for warehousing →
Nurses and pharmacists scan several medications quickly, so patients get the right prescriptions without delay. The same flow tracks medical supplies and keeps essential items in stock.
Barcode scanning for healthcare →Turn employees' smartphones and tablets into barcode scanners, in the store, the warehouse or on the road. The Barcode Scanner by barKoder app was tested at Zebra's Global Enablement Center for compatibility with Zebra mobile computers, and barKoder is a Zebra Registered ISV Partner.
Adjust the scanner's look, overlays and feedback indicators to match your brand and workflow. For heavy web workloads, Web SDK 1.7.0 scans on two Web Worker threads by default and up to four when your app needs more processing power.
Building for a specific stack? See the Android Barcode Scanner SDK, iOS Barcode Scanner SDK, Web Barcode Scanner SDK and Cordova Barcode Scanner SDK pages.
Continuous scanning is documented for native Android and iOS, the Web SDK and every cross-platform framework barKoder supports.
Direct SDKs for mobile, browser, desktop and server environments.
Official integrations for teams building one application across platforms.
Teams that scan item after item, all day, with barKoder.
Verified credentials
Certified information security management built around internationally recognized controls.
Official Solution Provider supporting standards-based barcode and data-capture workflows.
Solution Provider listing covering barcode, mobile application and 2D barcode capabilities.
Discover the barKoder Web SDK listing and connect through Microsoft Marketplace.
Registered Independent Software Vendor in Zebra's PartnerConnect ecosystem.
Install the free barKoder demo app, or open the web demo, and scan your own barcodes before you integrate the SDK.
iPhone and iPad
Scan with your camera, or point it at the QR code to open the App Store.
Android phones and tablets
Scan with your camera, or point it at the QR code to open Google Play.
Any modern browser
Runs the Web SDK in your browser, on desktop or mobile, with nothing to install.
Test with known samples. Print or display the testing sheet and scan each 1D and 2D barcode with the demo app. The data sheet summarizes the SDK for your team.
Continuous scanning lets an app scan barcodes repeatedly without manually restarting the scanner after each successful scan. The scanner keeps the session open, and a duplicate setting controls the delay before the same code is reported again.
Set close-session-on-result to false and set thresholdBetweenDuplicatesScans. On the web, call Barkoder.setContinuous(true). The Enable Continuous Scanning example has the code for each platform.
Set thresholdBetweenDuplicatesScans to -1 to report each barcode only once, or to a number of seconds to allow a repeat only after that time. A value of 0 reports the same barcode continuously with no delay. On the web, use Barkoder.setDuplicatesDelayMs() in milliseconds.
In the Web SDK, the decoder pauses after a result while the camera preview keeps running. Call Barkoder.setPauseDecoding(false) in the result callback of startScanner to keep scanning.
On React Native, turn off image results and barcode thumbnails during continuous scanning, because returning them on Android creates performance issues. On the web, Web SDK 1.7.0 decodes on Web Worker threads and processes new camera frames as they arrive instead of decoding the same image repeatedly.
Continuous scanning reads one barcode after another and reports each result as it comes. Batch MultiScan also reads many barcodes in the same camera view and caches the results. Use it for shelves, racks and boxes with several labels.
Android, iOS, the Web SDK, Flutter, React Native, Capacitor, Cordova, .NET MAUI and NativeScript all have a documented continuous scanning example. For browser apps, see the WASM Barcode Scanner SDK.
Many teams do. barKoder runs on the smartphones and tablets staff already carry, and on industrial mobile computers: the Barcode Scanner by barKoder app was validated at Zebra's Global Enablement Center. Start with a free trial for 30 days and up to 25 devices from the trial page, then check barKoder pricing.
Test continuous scan mode on your own labels and devices with a free 30-day trial, or talk to an SDK expert about your high-volume workflow.
