Re: Done correctly, not a stupid idea
>Bring in ID cards which merely state name, gender at time of issuing of ID card, residence address (also address fo tax purposes) and a photo of the person, plus a unique identifier key.
It shouldn't contain the address details. Too many people are having to live in transient (rental) addresses, and having to get a new one every time they move would instantly make the card redundant until they get a replacement. If there is a cost associated this will negatively impact the less affluent sectors of society.
Unless, of course, the card and replacements are free of charge to the holder.