diff --git a/inrim_anagrafiche/models/ca_work_info.py b/inrim_anagrafiche/models/ca_work_info.py
index 49a2259..4dbb4e2 100644
--- a/inrim_anagrafiche/models/ca_work_info.py
+++ b/inrim_anagrafiche/models/ca_work_info.py
@@ -118,6 +118,8 @@ def _check_date(self):
     def check_update_state(self):
         now = fields.Date.today()
         self.ensure_one()
+        if not self.date_start or not self.date_end:
+            return
         if self.date_start <= now <= self.date_end:
             self.state = 'active'
         elif self.date_start > now:
diff --git a/inrim_controllo_accessi/data/ir.cron.xml b/inrim_controllo_accessi/data/ir.cron.xml
index 329125a..b2834f4 100644
--- a/inrim_controllo_accessi/data/ir.cron.xml
+++ b/inrim_controllo_accessi/data/ir.cron.xml
@@ -3,10 +3,25 @@
     <data noupdate="1">
 
         <record id="ir_cron_check_reader_person_validity" model="ir.cron">
-            <field name="name">INRIM: Check Reader Person  Validity</field>
+            <field name="name">INRIM: Check Reader Person Validity</field>
             <field name="model_id" ref="model_ca_lettore_persona"/>
             <field name="type">ir.action.server</field>
-            <field name="code">model._cron_check_validity_person_reader()</field>
+            <field name="code">model._cron_check_validity_person_reader()
+            </field>
+            <field name="interval_type">minutes</field>
+            <field name="interval_number">10</field>
+            <field name="numbercall">-1</field>
+            <field name="priority">5</field>
+            <field name="doall">False</field>
+            <field name="active">True</field>
+        </record>
+
+
+        <record id="ir_cron_check_tag_reader_validity" model="ir.cron">
+            <field name="name">INRIM: Check Tag Reader Validity</field>
+            <field name="model_id" ref="model_ca_tag_lettore"/>
+            <field name="type">ir.action.server</field>
+            <field name="code">model._cron_check_validity_tag_reader()</field>
             <field name="interval_type">minutes</field>
             <field name="interval_number">10</field>
             <field name="numbercall">-1</field>
diff --git a/inrim_controllo_accessi/models/ca_punto_accesso.py b/inrim_controllo_accessi/models/ca_punto_accesso.py
index 683ee13..7b77154 100644
--- a/inrim_controllo_accessi/models/ca_punto_accesso.py
+++ b/inrim_controllo_accessi/models/ca_punto_accesso.py
@@ -112,6 +112,8 @@ class CaPuntoAccesso(models.Model):
     tz = fields.Selection(
         related='ente_azienda_id.tz', store=True, string="Timezone", readonly=True)
 
+    ##TODO add cron to check and detach local_access  tags if expired
+
     @api.constrains('date_start', 'date_end')
     def _check_date(self):
         for record in self:
diff --git a/inrim_controllo_accessi/models/ca_tag_lettore.py b/inrim_controllo_accessi/models/ca_tag_lettore.py
index 183ab8f..f5faae2 100644
--- a/inrim_controllo_accessi/models/ca_tag_lettore.py
+++ b/inrim_controllo_accessi/models/ca_tag_lettore.py
@@ -128,7 +128,7 @@ def check_update_by_date_valididty(self):
             if tag_reader:
                 tag_reader.check_update_state()
 
-    def _cron_check_validity_winfo(self):
+    def _cron_check_validity_tag_reader(self):
         self.check_update_by_date_valididty()
 
     @api.depends('ca_lettore_id', 'ca_tag_id')