now not self-destruct
This is a great idea in theory. But do you not think that somebody in a third world country without any sort of social security payments will not find a way around it. Pay a few pence each for undamaged one to the guy that collects the rubbish and resell them. what do you think! Only way is if every doctor or nurse broke them before throwing away, but would they risk their lives if threatened and told just put in bin unbroken or if a local nurse assistant given even 5p each for them???. This is the real world of poverty & hand to mouth living.
Good luck anyway???