diff --git a/app/controllers/cardManager.py b/app/controllers/cardManager.py
index 74c86f3..b25e564 100644
--- a/app/controllers/cardManager.py
+++ b/app/controllers/cardManager.py
@@ -18,7 +18,7 @@ def register_card(group_id: int):
     if key == None:
         logger.info("No card registered. Check logs!")
         raise HTTPException(status.HTTP_417_EXPECTATION_FAILED, detail="No card registered. Check logs!")
-    card = Card(group_id=group_id, uuid=key)
+    card = Card(group_id=group_id, key=key)
     return card
 
 @card_router.post("/{group_id}", response_model=Card)
@@ -31,7 +31,7 @@ def del_card(*, db: Session = Depends(get_session), admin: bool = Depends(auth_i
     key = DeleteCard()
     logger.info(key)
     try:
-        card = db.exec(select(Card).where(Card.uuid == key)).one()
+        card = db.exec(select(Card).where(Card.key == key)).one()
     except NoResultFound:
         logger.info(f"The key:'{key}' was not found in db!")
         raise HTTPException(status_code=500, detail="Key on card not found in DB. Please tell an admin about this. KEY={key}")
diff --git a/app/controllers/debugManager.py b/app/controllers/debugManager.py
index 282c9bd..8d5e8c9 100644
--- a/app/controllers/debugManager.py
+++ b/app/controllers/debugManager.py
@@ -16,14 +16,14 @@ debug_router = APIRouter(
 def add_card_manually(groupid: int, card_key: str, db: Session=Depends(get_session)):
     """Add cards manually (you also have to delete them manually)"""
     logger.critical(f"Manual db change: adding a card with key: {card_key} to group: {groupid}")
-    card = Card(group_id=groupid, uuid=card_key)
+    card = Card(group_id=groupid, key=card_key)
     add_and_refresh(db, card)
     return card
 
 @debug_router.get("/rmcard/{card_key}")
 def remove_card_manually(card_key: str, db: Session = Depends(get_session)):
     logger.critical(f"Manual db change: removing a card with key: {card_key}")
-    card = db.exec(select(Card).where(Card.uuid == card_key)).one()
+    card = db.exec(select(Card).where(Card.key == card_key)).one()
     add_and_refresh(db, card)
 
 @debug_router.put("/getcards")
@@ -33,5 +33,5 @@ def list_all_cards(db: Session = Depends(get_session)):
     print(cards)
     out = []
     for i in cards:
-        out.append({i.uuid: i.group.name})
+        out.append({i.key: i.group.name})
     return out
\ No newline at end of file
diff --git a/app/model/models.py b/app/model/models.py
index b465640..87e7e33 100644
--- a/app/model/models.py
+++ b/app/model/models.py
@@ -84,7 +84,7 @@ class AccessAuthorizationUpdate(Base):
 #### Card
 class Card(Base, table=True):
     id: int | None = Field(default=None, primary_key=True)
-    uuid: str
+    key: str
     group_id: int | None = Field(default=None, foreign_key="groupdb.id")
     group: GroupDB | None = Relationship(back_populates="cards")
 
diff --git a/app/services/door.py b/app/services/door.py
index afdeaff..c4d1faf 100644
--- a/app/services/door.py
+++ b/app/services/door.py
@@ -28,11 +28,11 @@ def closeDoor():
 def isDoorOpen():
     return doorIsOpen
 
-def checkAccess(uuid: str, db: Session):
+def checkAccess(key: str, db: Session):
     try:
         current_weekday = datetime.datetime.weekday(datetime.date.today())
         current_time = datetime.datetime.now()
-        card = db.exec(select(Card).where(Card.uuid == uuid)).one()
+        card = db.exec(select(Card).where(Card.key == key)).one()
         for auth in card.group.accessauths:
             logger.info(f"checking auth: {auth.name}")
             for timetable in auth.timetables:
diff --git a/test/conftest.py b/test/conftest.py
index cc1a953..50e4005 100644
--- a/test/conftest.py
+++ b/test/conftest.py
@@ -99,7 +99,7 @@ def test_group(db_session):
 @pytest.fixture
 def test_card(db_session, test_group):
     """Create a test card."""
-    card = Card(uuid="test-uuid-123", group_id=test_group.id)
+    card = Card(key="test-key-123", group_id=test_group.id)
     db_session.add(card)
     db_session.commit()
     db_session.refresh(card)
diff --git a/test/test_models.py b/test/test_models.py
index 6dff3aa..85e3ac9 100644
--- a/test/test_models.py
+++ b/test/test_models.py
@@ -59,8 +59,8 @@ def test_access_authorization_models():
 
 def test_card_model():
     """Test card model creation and validation."""
-    card = Card(uuid="test-uuid", group_id=1)
-    assert card.uuid == "test-uuid"
+    card = Card(key="test-key", group_id=1)
+    assert card.key == "test-key"
     assert card.group_id == 1
 
 
diff --git a/test/test_services/test_door.py b/test/test_services/test_door.py
index b90e9ef..fb824e2 100644
--- a/test/test_services/test_door.py
+++ b/test/test_services/test_door.py
@@ -9,7 +9,7 @@ def test_check_access_with_valid_timetable(db_session):
     db_session.add(group)
     db_session.commit()
 
-    card = Card(uuid="test-uuid-123", group_id=group.id)
+    card = Card(key="test-key-123", group_id=group.id)
     db_session.add(card)
 
     timetable = Timetable(
@@ -27,7 +27,7 @@ def test_check_access_with_valid_timetable(db_session):
     db_session.commit()
 
     # Test: access should be granted within time window
-    result = checkAccess("test-uuid-123", db_session)
+    result = checkAccess("test-key-123", db_session)
     assert result == True
 
 def test_check_access_outside_hours(db_session):
@@ -36,7 +36,7 @@ def test_check_access_outside_hours(db_session):
     db_session.add(group)
     db_session.commit()
 
-    card = Card(uuid="test-uuid-123", group_id=group.id)
+    card = Card(key="test-key-123", group_id=group.id)
     db_session.add(card)
 
     timetable = Timetable(
@@ -52,10 +52,10 @@ def test_check_access_outside_hours(db_session):
     group.accessauths = [aa]
 
     db_session.commit()
-    result = checkAccess("test-uuid-123", db_session)
+    result = checkAccess("test-key-123", db_session)
     assert result == False
 
 def test_check_access_invalid_card(db_session):
     # Should raise exception for non-existent card
     with pytest.raises(Exception):
-        checkAccess("non-existent-uuid", db_session)
+        checkAccess("non-existent-key", db_session)