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diff --git a/addons/barcodes/models/barcode_events_mixin.py b/addons/barcodes/models/barcode_events_mixin.py
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+++ b/addons/barcodes/models/barcode_events_mixin.py
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+# -*- coding: utf-8 -*-
+
+from odoo import models, fields, api
+
+class BarcodeEventsMixin(models.AbstractModel):
+    """ Mixin class for objects reacting when a barcode is scanned in their form views
+        which contains `<field name="_barcode_scanned" widget="barcode_handler"/>`.
+        Models using this mixin must implement the method on_barcode_scanned. It works
+        like an onchange and receives the scanned barcode in parameter.
+    """
+
+    _name = 'barcodes.barcode_events_mixin'
+    _description = 'Barcode Event Mixin'
+
+    _barcode_scanned = fields.Char("Barcode Scanned", help="Value of the last barcode scanned.", store=False)
+
+    @api.onchange('_barcode_scanned')
+    def _on_barcode_scanned(self):
+        barcode = self._barcode_scanned
+        if barcode:
+            self._barcode_scanned = ""
+            return self.on_barcode_scanned(barcode)
+
+    def on_barcode_scanned(self, barcode):
+        raise NotImplementedError("In order to use barcodes.barcode_events_mixin, method on_barcode_scanned must be implemented")