Thanks for your thoughts. Yes, sqlite3 does not yet support authentication for an SQLite database. Adding support for login will require changes to HeidiSQL itself, and probably a different <a href="https://coding.fm/sqlite3-dll/">sqlite3.dll</a> than the one shipped with Heidi. I just read about authentication on sqlite.org and ran some tests here, but it seems sqlite3.dll does not provide the required sqlite3_user_authenticate interface. Feel free to shed some light on SQLite authentication here.