In practice this has not been a problem. It's like saying you can't put unsubscribe links in emails because a bot will click on it... You just simply design the software so that doesn't happen.
Like I said, I've used a similar service that only allows you to view the secret once and I've used it dozens of times with no problems.
Like I said, I've used a similar service that only allows you to view the secret once and I've used it dozens of times with no problems.