Well, I would strongly advocate that such a system be used only after a diagnosis, at which point, you would be placed on medications to slow the progression. At that point, this would be seen as a rather innocuous thing by family members, since it's a machine meant to help you to remember to take medication that you need to help with your dementia.

I have considered other machines -- again, as a theoretical exercise -- but ultimately, my decision process was that it had to maintain the plausible deniability to family members that I just died of natural causes. Allowing family to believe that I opted out because I felt that I was a burden would certainly lead to trauma beyond death from natural causes or an accident.

I'm a strong believer in having the power of euthanasia. Part of the reason why dementia frightens me is because it would strip me of this agency. I currently suffer from heart failure, and dementia is a comorbidity in the later stages. Being able to choose a dignified end, hopefully in 30-40 years, is important to me.