diff --git a/blueprints/inventory.py b/blueprints/inventory.py
index c40c619..71ae826 100644
--- a/blueprints/inventory.py
+++ b/blueprints/inventory.py
@@ -1,6 +1,7 @@
 import os
 from flask import Blueprint, render_template, request, redirect, url_for, jsonify, current_app
 from flask_login import login_required, current_user
+from werkzeug.utils import secure_filename
 from core.db import get_db_connection
 from core.utils import download_image
 from core.events import socketio
@@ -50,6 +51,31 @@ def upsert():
         conn.commit()
     return redirect(url_for('inventory.inventory'))
 
+@inventory_bp.route('/upload_image', methods=['POST'])
+@login_required
+def upload_image():
+    if 'image' not in request.files:
+        return jsonify({"error": "No image file provided"}), 400
+    
+    file = request.files['image']
+    barcode = request.form.get('barcode', '')
+    
+    if not barcode:
+        return jsonify({"error": "No barcode provided"}), 400
+    
+    if file.filename == '':
+        return jsonify({"error": "Empty file"}), 400
+
+    cache_dir = current_app.config['CACHE_DIR']
+    ext = '.jpg'
+    local_filename = f"{secure_filename(barcode)}{ext}"
+    local_path = os.path.join(cache_dir, local_filename)
+    
+    file.save(local_path)
+    
+    image_url = f"/static/cache/{local_filename}"
+    return jsonify({"image_url": image_url}), 200
+
 @inventory_bp.route('/delete/<barcode>', methods=['POST'])
 @login_required
 def delete(barcode):
diff --git a/templates/checkout.html b/templates/checkout.html
index bb9ec64..feea927 100644
--- a/templates/checkout.html
+++ b/templates/checkout.html
@@ -67,7 +67,7 @@
                         <div class="col-8">
                             <label class="form-label text-muted small mb-1">Precio Unitario</label>
                             <input type="number" id="custom-price" class="form-control" placeholder="Ej: 1500"
-                                   onkeydown="if(event.key === 'Enter') addCustomProduct()">
+                                   onkeydown="if(event.key === 'Enter') { event.stopPropagation(); addCustomProduct(); }">
                         </div>
                         <div class="col-4">
                             <label class="form-label text-muted small mb-1">Tipo</label>
@@ -101,7 +101,7 @@
                         <input type="text" inputmode="numeric" id="varios-price-input" class="form-control form-control-lg text-center fw-bold fs-4"
                             placeholder="$0" 
                             oninput="let v = this.value.replace(/\D/g, ''); this.value = v ? parseInt(v, 10).toLocaleString('es-CL') : '';"
-                            onkeydown="if(event.key === 'Enter') addVariosToCart()">
+                            onkeydown="if(event.key === 'Enter') { event.stopPropagation(); addVariosToCart(); }">
                     </div>
                     <button class="btn btn-warning w-100 py-3 fw-bold" onclick="addVariosToCart()">
                         <i class="bi bi-cart-plus me-1"></i> Agregar al Carrito
@@ -119,7 +119,7 @@
                 </div>
                 <div class="modal-body">
                     <input type="number" id="weight-input" class="form-control form-control-lg" step="1"
-                           placeholder="Ej: 500" onkeydown="if(event.key === 'Enter') confirmWeight()">
+                           placeholder="Ej: 500" onkeydown="if(event.key === 'Enter') { event.stopPropagation(); confirmWeight(); }">
                 </div>
                 <div class="modal-footer d-flex">
                     <button class="btn btn-secondary flex-grow-1" data-bs-dismiss="modal">Cancelar</button>
@@ -1539,6 +1539,7 @@
 
         // 3. The Money Button: Enter
         if (event.code === 'NumpadEnter' || event.key === 'Enter') {
+            if (event.repeat) return;
             
             if (itemIndexToRemove !== null) {
                 event.preventDefault(); 
@@ -1562,7 +1563,7 @@
 
         // 4. The Varios Button: +
         if (event.code === 'NumpadAdd' || event.key === '+') {
-            if (isTyping) return;
+            if (isTyping || event.repeat) return;
             event.preventDefault(); 
             openVariosModal();
             return;
@@ -1570,7 +1571,7 @@
 
         // 5. The Oops Button: - (Remove last item)
         if (event.code === 'NumpadSubtract' || event.key === '-') {
-            if (isTyping) return;
+            if (isTyping || event.repeat || itemIndexToRemove !== null) return;
             if (!openModal && cart.length > 0) {
                 event.preventDefault();
                 removeItem(cart.length - 1);
@@ -1580,7 +1581,7 @@
 
         // 6. The Speedrun Button: * (Venta Rápida)
         if (event.code === 'NumpadMultiply' || event.key === '*') {
-            if (isTyping) return;
+            if (isTyping || event.repeat) return;
             event.preventDefault();
             openQuickSaleModal();
             return;
@@ -1592,11 +1593,6 @@
         itemIndexToRemove = null;
     });
 
-    // Safety cleanup: If you close the remove modal with ESC or the Eject button, clear the memory
-    document.getElementById('removeConfirmModal').addEventListener('hidden.bs.modal', function () {
-        itemIndexToRemove = null;
-    });
-
     /* =========================================
        9. DOOM EASTER EGG LOGIC
        ========================================= */