In practice, there are a lot of devices around for which tampering would be profitable. Making these devices resist tampering is a practice with a long history

In practice, there are a lot of devices around for which tampering would be profitable. Making these devices resist tampering is a practice with a long history of good (though imperfect) results. Your electric meter is a great example, or the odometer in your car. Yes, grandparent said tamper-proof instead of tamper-resistant or tamper-evident. So? It's obvious what they meant.