Misleading title - this doesn't prevent tampering, it just makes it obvious to you, as the laptop owner, that your machine has been tampered with. Still useful, but then what are you supposed to do about it?
You can (by means) embarrass / frustrate / reveal undesired examination / tampering of possessions by placing one or more "glitter bombs" in them. A sealed bag, container, envelope, etc. Use different colors to reveal to you just what was accessed.
Seems fine...actually. All security tools are only deterrents to varying degrees.