I started a new thread, because to start a discussion on this in the thread were it was mentioned was totally not appropriate, but I think a discussion on it is merited, maybe even needed.
Further, such a device would not be a low tech, easy to maintain, easy to operate, idiot proof device. At least, I can’t picture a way that it can be at the moment.
And the comparison with climbing and rope is a very bad one, because climbers DO work in teams of two where they are responsible for eachothers safety.
In my opinion, what you are suggesting here will only give a false sense of security and is not an actual safety improvement at all. It will lead to more people diving by themselves, because now they have a safety vest. Even if you were using a properly functioning safety vest and had a SWBO, you will still need someone to protect your airways and help you. You will need a buddy anyway! Vest or no vest.Just a few more reasons that somebody needs to get a SWB vest together. Someone mentioned climbing and using a rope, we as freedivers don't have a rope, it's time. This doesn't mean that diving alone is a good thing to do but we have all done it at some point and it would be nice to have a safety net of sorts.
Further, such a device would not be a low tech, easy to maintain, easy to operate, idiot proof device. At least, I can’t picture a way that it can be at the moment.
And the comparison with climbing and rope is a very bad one, because climbers DO work in teams of two where they are responsible for eachothers safety.