Code 39 was developed by David Allais and Ray Stevens of Intermec in 1974. Their original design included two wide bars and one wide space in each character, resulting in 40 possible characters. Setting aside one of these characters as a start and stop pattern left 39 characters, which was the origin of the name Code 39.

How to scan 1D and 2D barcodes (EN)

Code 39 Overview

Supported Host Device


Supported Business Application:


Partner Applications

Applications integrated with Socket Mobile's Capture SDK.


Verify with your application provider that Socket Mobile's latest Capture SDK was implemented in your app. See the latest Capture SDK version.

See complete list of Partner Applications.

Non-Capture SDK Applications

Applications that are not integrated with Socket Mobile's Capture SDK




Code 39 is supported by default on all Socket Mobile barcode scanners. You can enable or disable this symbology on your Socket Mobile scanner simply by scanning the codes below.  Note: Scanner must be in a disconnected state before scanning the command barcode.

Enable Code 39 by scanning the barcode below*:
(For D730 and S730 click the barcode, print and scan)


Disable Code 39 by scanning the barcode below*:
(For D730 and S730 click the barcode, print and scan)


See the full programming guide for more info and troubleshooting.
* D750 requires separate enable/disable command barcodes found in the programming guide.

Troubleshooting / FAQ


Q: What is the typical usage for Code 39?

A: Inventory Applications and Industrial Applications

Q: How to read special characters such as % or &?

A: Scan the barcode below to enable Code 39 Full ASCII. (For D730 and S730 click the barcode, print and scan)

Code 39 Full ASCII Enable


Q: How to parse the data?

A: App coming soon, please contact

Download on iTunesDownload google play 

Q: Do you need help creating this barcode?

A: Socket Mobile recommends this free barcode generator: 

Need to generate your own barcode?
We recommend Tech-it.

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