Improve Barcode Scanning Accuracy

Barcode scanning performance can vary across Android devices due to differences in camera hardware. Devices with less reliable autofocus, in particular, may produce less accurate results.

To address this, we’ve introduced setOptimizeCameraForNearScan(boolean) in our RecognizerView. Enabling this setting helps the camera focus better for near-distance scanning, which is typical for barcodes on receipts.

How to use it

To improve camera focus on select devices, apply the following setting:

RecognizerView recognizerView = findViewById(R.id.recognizer);
recognizerView.setOptimizeCameraForNearScan(true);

Enabling this setting helps capture clearer frames, leading to more accurate barcode results.

Comparison

Here’s a visual comparison of a captured frame with and without this optimization on a device with autofocus challenges:

setOptimizeCameraForNearScan(false)	setOptimizeCameraForNearScan(true)

Note: This setting may not be necessary for all devices. We recommend enabling it for devices known to have issues with close-up focus.