diff --git a/lcs/root.ptl b/lcs/root.ptl
index b0a3e17..7f7e551 100644
--- a/lcs/root.ptl
+++ b/lcs/root.ptl
@@ -101,6 +101,9 @@ class RootDirectory(Directory):
     def unlogged_page [html] (self):
         form = Form(enctype='multipart/form-data')
         form.add(HtmlWidget, '<div id="sso-options">')
+        form.add(SingleSelectWidget, 'binding',
+                title = _('Protocol Binding for <Response>'),
+                options = [(None, ''), ('post', 'POST'), ('artifact', 'Artifact')])
         form.add(CheckboxWidget, 'force_authn', value = False,
                 title = _('Force Authentication (ForceAuthn)'))
         form.add(CheckboxWidget, 'is_passive',
@@ -188,6 +191,12 @@ class RootDirectory(Directory):
         elif nid_format == 'none':
             login.request.nameIDPolicy.format = lasso.SAML2_NAME_IDENTIFIER_FORMAT_NONE
 
+        binding = form.get_widget('binding').parse()
+        if binding == 'artifact':
+            login.request.protocolBinding = lasso.SAML2_METADATA_BINDING_ARTIFACT
+        elif binding == 'post':
+            login.request.protocolBinding = lasso.SAML2_METADATA_BINDING_POST
+
         login.request.nameIDPolicy.allowCreate = form.get_widget('allow_create').parse()
         login.request.forceAuthn = form.get_widget('force_authn').parse()
         login.request.isPassive = form.get_widget('is_passive').parse()