Orderscanner / Packstation - Change EAN-meta key

functions.php

 <?php

/**
 * @snippet       WooCommerce - Orderscanner/Packstation - Get barcode from iZettle-plugin
 * @author        Redlight Media AB / Christopher Hedqvist
 * @compatible    WooCommerce 3.9.0
 */

function redlight_redlight_izettle_barcode( $meta_key ) {
    $meta_key = '_izettle_barcode';
    return $meta_key;
}
add_filter( 'orderscanner_packstation_product_barcode_meta_key', 'redlight_redlight_izettle_barcode' );