diff --git a/db/1.sqlite-shm b/db/1.sqlite-shm
index 5474019..dc07540 100644
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diff --git a/db/auth_copy_2.sqlite-shm b/db/auth_copy_2.sqlite-shm
new file mode 100644
index 0000000..e184ba9
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diff --git a/db/auth_copy_2.sqlite-wal b/db/auth_copy_2.sqlite-wal
new file mode 100644
index 0000000..ba59f84
Binary files /dev/null and b/db/auth_copy_2.sqlite-wal differ
diff --git a/src/utils/auth.rs b/src/utils/auth.rs
index fb934e9..f7c637c 100644
--- a/src/utils/auth.rs
+++ b/src/utils/auth.rs
@@ -136,7 +136,8 @@ fn verify_password(password: &str, stored_hash: &str) -> bool {
 pub struct RegisterValues{
     username: String,
     password: String,
-    hotel_id: i32,
+    #[serde(default)]
+    hotel_ids: Vec<i32>, //-> :Vec!<32>, maybe optionnal ?
     displayname: String,
 }
 
@@ -167,10 +168,32 @@ pub async fn register_user (
         .map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "DB connection error"))?;
 
     conn.execute(
-        "INSERT INTO users (username, password, hotel_id, displayname) VALUES (?1, ?2, ?3, ?4)",
-        params![payload.username, hashed_password, payload.hotel_id, payload.displayname],
+        "INSERT INTO users (username, password, displayname) VALUES (?1, ?2, ?3)",
+        params![payload.username, hashed_password, payload.displayname],
     )
     .map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "DB insert error"))?;
+    
+    let user_id = conn.last_insert_rowid();
+    for hotel_id in payload.hotel_ids {
+        
+        // more logic for security here
+        //FIXME: needs to be the display name in the DB, scheme is currently wrong
+        
+        let hotel_name = conn.execute(
+            "SELECT hotel_name
+            FROM hotels
+            WHERE id = ?1 ",
+            params![hotel_id],
+        ).map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "DB insert error"))?;
+        
+        conn.execute(
+        "INSERT INTO hotel_user_link (user_id, hotel_id, username, hotel_name) VALUES (?1, ?2, ?3, ?4)",
+            params![user_id, hotel_id, payload.username, hotel_name],
+        )
+        .map_err(|_| (StatusCode::INTERNAL_SERVER_ERROR, "DB insert error"))?;
+
+    }
+
 
     Ok((StatusCode::CREATED, "User registered successfully"))
 }