Tamper proof zip tie security hood

Alice wants to send a package to Bob, and she wants Bob to verify that his stalker, Eve, has not opened the package since it left Alice's hands. Alice needs a tamper proof seal.

Alice's package can be closed with a zip tie, so I have made her a little accessory that prevents Eve from opening the zip tie (with a pin, for example), and closing it again. Even if Eve were to cut the zip tie, she would not be able to remove it from the the tamper proof hood.

Eve has one option remaining: Cut