"objections in the UK centred on the right of not having to carry it". I have a driving licence and a passport and I could get a ID card too. I can understand I need a driving licence driving a car and having one on me makes life easier. I can also understand that there are occasions when a passport is needed.
But what the hell was this panic about the ID card in GB, was it the money or the information on the card or did you actually believe you had to carry it on you all the time like in some police state. Never mind.
This was, however, about Estonia, small neat and educated with a lesser percentage of illiteracy than the USA and GB, probably better at STEM too. Starting out late and clean with IT has had its advantages too in Estonia, but regarding internet voting, please Estonia, think twice, don't fool your self, it will never be safe.