I actually know of a few people who used a medical alert bracelet for their mental conditions because oftentimes they'd have horrible dissociation and would forget where they were, or they had some autism and could get sensory overload and couldn't communicate well what their needs were.

I think it can be helpful in situations like those, where if you have a condition that you struggle to communicate what your needs are, or if you forget how to get home or forget where you are. That sort of thing.