diff --git a/app/controllers/rfid_tags_controller.rb b/app/controllers/rfid_tags_controller.rb
index 1fc49b0..bdc9130 100644
--- a/app/controllers/rfid_tags_controller.rb
+++ b/app/controllers/rfid_tags_controller.rb
@@ -1,9 +1,10 @@
 class RfidTagsController < ApplicationController
   skip_forgery_protection
+  allow_unauthenticated_access
 
   def create
-    identifier = params.expect(:identifier)
-    rfid_tag = RfidTag.find_or_initialize_by(identifier:)
+    rfid_tag_params = params.expect(rfid_tag: [ :chip_id, :identifier ])
+    rfid_tag = RfidTag.find_or_initialize_by(chip_id: rfid_tag_params[:chip_id], identifier: rfid_tag_params[:identifier])
     if rfid_tag.new_record?
       register rfid_tag
       return
@@ -15,6 +16,7 @@ class RfidTagsController < ApplicationController
   private
 
   def register(rfid_tag)
+    rfid_tag.user = RfidTag.where(chip_id: rfid_tag.chip_id).first&.user
     rfid_tag.save!
     head :created, code: :registered
   end