Get one tape. Six hours. Sealed. No skipping. Rewind takes forever. Everything else gets blocked. That's it. That's the product.
It covers the computer the deck is on. A phone or another computer is outside it; the seal makes cheating cost something, it can't make it impossible.
Screen share without the panic. Everything else is blocked, so all anyone sees is eggs, the weather and one sealed tape.
You pick the friends who get told. If the seal breaks they get one email: that it broke, and when. Never what's on the tape.