Yeah, for people who aren't parents or don't know, these things are pretty terrifying and it can be a rather painful and horrible death. I remember being somewhat concerned about it when purchasing, but considering that my kids are no longer toddlers and don't randomly eat stuff, I figured it was reasonably safe to have these in our house now. But I do think the mechanism should be a bit harder to open. However, you'd be amazed at how many other things use these button cells and don't have them properly secured. Even toys and books sometimes. It was kinda ridiculous. I would always check that and make sure they were behind tiny screw doors on toys and when disposing, I'd always wrap them several times in tape before throwing away. I actually recently ordered some new ones for my Ecobee temperature sensors and noticed that some brands now offer them with a really bitter coating like Nintendo Switch games and I think that should be the standard moving forward as a last defense against being swallowed.