diff --git a/app/models/rfid_tag.rb b/app/models/rfid_tag.rb
index 88efdc8..0a8fcde 100644
--- a/app/models/rfid_tag.rb
+++ b/app/models/rfid_tag.rb
@@ -1,2 +1,3 @@
 class RfidTag < ApplicationRecord
+  belongs_to :user, required: false
 end
diff --git a/db/migrate/20260127134053_add_chip_id_and_users_to_rfid_tags.rb b/db/migrate/20260127134053_add_chip_id_and_users_to_rfid_tags.rb
new file mode 100644
index 0000000..a30bc13
--- /dev/null
+++ b/db/migrate/20260127134053_add_chip_id_and_users_to_rfid_tags.rb
@@ -0,0 +1,6 @@
+class AddChipIdAndUsersToRfidTags < ActiveRecord::Migration[8.0]
+  def change
+    add_column :rfid_tags, :chip_id, :string
+    add_reference :rfid_tags, :user, foreign_key: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 6f33dca..8e352f9 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2026_01_12_150457) do
+ActiveRecord::Schema[8.0].define(version: 2026_01_27_134053) do
   create_table "moods", force: :cascade do |t|
     t.string "mode"
     t.datetime "recorded_at"
@@ -21,9 +21,12 @@ ActiveRecord::Schema[8.0].define(version: 2026_01_12_150457) do
   create_table "rfid_tags", force: :cascade do |t|
     t.string "identifier"
     t.string "mode"
-    t.datetime "created_at", null: false
-    t.datetime "updated_at", null: false
+    t.datetime "created_at", default: -> { "CURRENT_DATE" }, null: false
+    t.datetime "updated_at", default: -> { "CURRENT_DATE" }, null: false
+    t.string "chip_id"
+    t.integer "user_id"
     t.index ["identifier"], name: "index_rfid_tags_on_identifier", unique: true
+    t.index ["user_id"], name: "index_rfid_tags_on_user_id"
   end
 
   create_table "sessions", force: :cascade do |t|
@@ -44,5 +47,6 @@ ActiveRecord::Schema[8.0].define(version: 2026_01_12_150457) do
     t.index ["email_address"], name: "index_users_on_email_address", unique: true
   end
 
+  add_foreign_key "rfid_tags", "users"
   add_foreign_key "sessions", "users"
 end