I would be thrilled by the possibility of having an implant which requires a timed confirmation (every 6 months or so) and if there is no, it would pour poison

I would be thrilled by the possibility of having an implant which requires a timed confirmation (every 6 months or so) and if there is no, it would pour poison in the bloodstream. I am terrified by the possibility of not being capable to end my life when I want to, either because I am too disabled, or senile to the point of forgetting to do that.