diff --git a/pos_barcode_block_on_error/README.rst b/pos_barcode_block_on_error/README.rst
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+POS: Block barcode scanning on error popup
+=========================================
+
+Summary
+-------
+This Point of Sale extension prevents the POS from processing further barcode
+scans while the "barcode not found" error popup is visible. It also avoids the
+scanner's Enter/Escape keystrokes from closing the popup, so the cashier must
+explicitly dismiss it (click/tap) before continuing.
+
+Features
+--------
+- Takes exclusive control of the barcode reader while the error popup is shown.
+- Prevents scanner-triggered keyboard "clicks" from closing the popup.
+- Keeps the initial error message visible; subsequent scans are ignored.
+- Includes CSS to highlight the error popup for better visibility.
+
+Usage
+-----
+- Scan a non-existent barcode in the POS.
+  - The error popup will show.
+  - Further scans will be ignored while the popup is visible.
+  - Close the popup via mouse/touch to resume scanning.
+
+Limitations
+-----------
+- While the popup is open, all barcode actions are blocked (product, client,
+  weight, price, discount, GS1, etc.). Customize the hook if you need
+  exceptions.
+
+
+Credits
+-------
+- Author: Criptomart
+- License: AGPL-3
diff --git a/pos_barcode_block_on_error/__manifest__.py b/pos_barcode_block_on_error/__manifest__.py
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+{
+    "name": "POS: Block barcode scanning on error popup",
+    "version": "16.0.1.0.0",
+    "summary": "Stops processing new barcodes while ErrorBarcodePopup is shown.",
+    "category": "Point of Sale",
+    "license": "AGPL-3",
+    "author": "Criptomart",
+    "depends": ["point_of_sale"],
+    "assets": {
+        "point_of_sale.assets": [
+            "pos_barcode_block_on_error/static/src/js/error_barcode_popup_block.js",
+            "pos_barcode_block_on_error/static/src/css/error_popup.css",
+        ],
+    },
+    "installable": True,
+}
diff --git a/pos_barcode_block_on_error/static/src/css/error_popup.css b/pos_barcode_block_on_error/static/src/css/error_popup.css
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+++ b/pos_barcode_block_on_error/static/src/css/error_popup.css
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+/* Emphasize the error popup for unknown barcode */
+/* Make the whole popup background red and invert text for visibility */
+.popup.popup-barcode {
+  background-color: #c62828 !important; /* strong red background */
+  color: #fff !important;               /* default text to white */
+}
+.popup.popup-barcode .title,
+.popup.popup-barcode .body {
+  color: #fff !important;
+  font-weight: 600;
+}
+.popup.popup-barcode .footer .button.cancel {
+  background: #fff !important;          /* white button on red bg */
+  color: #c62828 !important;            /* red text */
+  border-color: #fff !important;
+}
diff --git a/pos_barcode_block_on_error/static/src/js/error_barcode_popup_block.js b/pos_barcode_block_on_error/static/src/js/error_barcode_popup_block.js
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+++ b/pos_barcode_block_on_error/static/src/js/error_barcode_popup_block.js
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+/** @odoo-module */
+/**
+ * Block barcode processing while ErrorBarcodePopup is visible by taking
+ * exclusive control of the barcode reader, and release it when closing.
+ */
+
+import Registries from "point_of_sale.Registries";
+import ErrorBarcodePopup from "point_of_sale.ErrorBarcodePopup";
+import { useBarcodeReader } from "point_of_sale.custom_hooks";
+
+const ErrorBarcodePopupBlock = (ErrorPopup) =>
+    class extends ErrorPopup {
+        setup() {
+            super.setup(...arguments);
+            // Prevent keyboard-triggered clicks (Enter on focused button)
+            owl.onMounted(() => {
+                this.__clickHandler = (ev) => {
+                    // Keyboard-triggered clicks usually have detail === 0
+                    if (ev && ev.detail === 0) {
+                        ev.preventDefault();
+                        ev.stopPropagation();
+                    }
+                };
+                if (this.el) {
+                    this.el.addEventListener('click', this.__clickHandler, true);
+                }
+            });
+
+
+            // Take exclusive control using POS hook so subsequent scans are ignored
+            useBarcodeReader({
+                product: () => {},
+                quantity: () => {},
+                weight: () => {},
+                price: () => {},
+                client: () => {},
+                discount: () => {},
+                cashier: () => {},
+                error: () => {},
+                gs1: () => {},
+            }, true);
+        }
+
+        willUnmount() {
+            // useBarcodeReader cleans up automatically on unmount
+            if (this.el && this.__clickHandler) {
+                this.el.removeEventListener('click', this.__clickHandler, true);
+            }
+            super.willUnmount(...arguments);
+        }
+
+        // Only accept real pointer clicks to close the popup; ignore keyboard/programmatic events
+        async confirm(ev) {
+            if (ev && ev.type === 'click' && ev.isTrusted && ev.detail > 0) {
+                return super.confirm();
+            }
+        }
+        cancel(ev) {
+            if (ev && ev.type === 'click' && ev.isTrusted && ev.detail > 0) {
+                return super.cancel();
+            }
+        }
+    };
+
+Registries.Component.extend(ErrorBarcodePopup, ErrorBarcodePopupBlock);
+
+export default ErrorBarcodePopup;