Gs1dataBar META Tag

RhoElements 2.x API


The Gs1dataBar META Tag is used to enable or disable the gs1dataBar decoder.


gs1dataBar (META Tag) <META> Syntax

<META HTTP-Equiv="scanner" content="gs1dataBar:[parameter]">

gs1dataBar JavaScript Object Syntax:
By default the JavaScript Object 'scanner' will exist on the current page and can be used to interact directly with the gs1dataBar.
To Set gs1dataBar parameters via JavaScript use the following syntax: scanner.Parameter = Value;

e.g. scanner.gs1dataBar = Value;


Items listed in this section indicate parameters, or attributes which can be set.

NamePossible ValuesDescriptionDefault Value
gs1dataBar:[Value] enabled/DisabledEnables/Disables the gs1dataBar decoder.Device specific



The gs1dataBar decoder was previously known as rss14. Code written for the rss14 decoder will be compatible with the new naming convention.


RhoElements Version2.1 or above
Supported DevicesAll supported devices.
Minimum RequirementsScanner or Imager module and device that supports gs1dataBar.
PersistenceTransient - Decoder settings are only guaranteed to persist until the Scanner is disabled

HTML/JavaScript Examples

The following example enables the scanner to read only gs1dataBar labels:

<META HTTP-Equiv="scanner" Content="allDecoders:disabled">
<META HTTP-Equiv="scanner" Content="gs1dataBar:enabled">
<META HTTP-Equiv="scanner" Content="enabled">

Above example can also be written as shown below:

<META HTTP-Equiv="scanner" Content="allDecoders:disabled;gs1dataBar:enabled;enabled">


<META HTTP-Equiv="scanner-all_decoders" Content="disabled">
<META HTTP-Equiv="scanner-gs1dataBar" Content="enabled">
<META HTTP-Equiv="scanner-enabled" Content="SCN1">