diff --git a/app/api.py b/app/api.py
index a80c9309..5098e7c9 100644
--- a/app/api.py
+++ b/app/api.py
@@ -55,6 +55,18 @@ async def create_token(user_id: str):
     return f"{user_id}__U{str(uuid.uuid4())}"
 
 
+async def get_current_user(token: Annotated[str, Depends(oauth2_scheme)]):
+    if token and '__U' in token:
+        current_user: schemas.UserBase = crud.update_user_by_token(db, token=token)  # type: ignore
+        if current_user:
+            return current_user
+    raise HTTPException(
+        status_code=status.HTTP_401_UNAUTHORIZED,
+        detail="Invalid authentication credentials",
+        headers={"WWW-Authenticate": "Bearer"},
+    )
+
+
 # App startup & shutdown
 # ------------------------------------------------------------------------------
 @app.on_event("startup")
@@ -113,8 +125,8 @@ async def authentication(form_data: Annotated[OAuth2PasswordRequestForm, Depends
 
 
 @app.post("/prices", response_model=schemas.PriceBase)
-async def create_price(price: schemas.PriceCreate):
-    db_price = crud.create_price(db, price=price)  # type: ignore
+async def create_price(price: schemas.PriceCreate, current_user: schemas.UserBase = Depends(get_current_user)):
+    db_price = crud.create_price(db, price=price, user=current_user)  # type: ignore
     return db_price
 
 
diff --git a/app/crud.py b/app/crud.py
index 23af2efe..e1738bfd 100644
--- a/app/crud.py
+++ b/app/crud.py
@@ -1,4 +1,5 @@
 from sqlalchemy.orm import Session
+from sqlalchemy.sql import func
 
 from app.models import Price
 from app.models import User
@@ -29,6 +30,16 @@ def create_user(db: Session, user: UserBase):
     return db_user
 
 
+def update_user_by_token(db: Session, token: str):
+    db_user = get_user_by_token(db, token=token)
+    if db_user:
+        db.query(User).filter(User.user_id == db_user.user_id).update({"last_used": func.now()})
+        db.commit()
+        db.refresh(db_user)
+        return db_user
+    return False
+
+
 def delete_user(db: Session, user_id: UserBase):
     db_user = get_user_by_user_id(db, user_id=user_id)
     if db_user:
@@ -38,8 +49,8 @@ def delete_user(db: Session, user_id: UserBase):
     return False
 
 
-def create_price(db: Session, price: PriceCreate):
-    db_price = Price(**price.dict())
+def create_price(db: Session, price: PriceCreate, user: UserBase):
+    db_price = Price(**price.dict(), owner=user.user_id)
     db.add(db_price)
     db.commit()
     db.refresh(db_price)