The inventor of 3D-printed 'suicide capsules' is planning to create a body implant for people with dementia that would kill its user if they forget to deactivate it.
Australian euthanasia advocate Dr Philip Nitschke, also known as 'Dr Death', is a former physician and head of the voluntary euthanasia campaign Exit International. 
He's already created controversy with his coffin-like 'Sarco Suicide Pods' that can be transported to 'idyllic' locations for people wanting to end their life.
The portable 3D-printed pods can be operated by users inside by pressing a button, releasing a flood of nitrogen and painlessly killing them in minutes. 
Now, Dr Nitschke has shared his concept for small but lethal implants, which people could choose to have inserted into their bodies in case they develop dementia.
Like something from Black Mirror, users would have to press the button 'regularly', maybe once every day, to prevent a lethal dose of poison being administered. 
If they developed dementia they would not have the capability to press the button, meaning the poison would be administered, ending their life. 
But aside from concerns surrounding assisted dying, the concept could prove disastrous if a user without dementia simply forgot to press their button.  
Australian euthanasia advocate Philip Nitschke (pictured), also known as 'Dr Death', is a former physician and head of the voluntary euthanasia campaign Exit International. The campaigner had his medical licence suspended in 2014 for supporting Perth man Nigel Brayley, 45, in taking his own life with the deadly drug nembutal powder for sale
A picture of the Sarco Suicide Pod, which can be operated internally and works by reducing oxygen levels