Journals and blogs discussion

Following a week of chastity play, my wife opted to provide me with an extra key. I was truthful and let her know that if she gave it to me, I would indeed use it. We placed the key inside a small transparent pouch, which she labeled “Just in case I decided to make another bag.” This setup gives me quick access while ensuring there’s no way for me to utilize it without her knowledge. The little bag resides in my wallet. What methods have others used?