With the rise of the internet I now consider my identity to be valuable. So I don't give it away for free.
I personally don't want my identity checked unless I'm asking someone to trust me. And I'd rather use a trust-minimizing system before going there. You don't need your id checked when going to the restaurant or the theater. You need to check someone's id when they take your money and promise you something in return (and even then, there may be a better way).
> I don't see a single instance of trade being limited even if all transactions were between established identities.
Do you buy something if you need to send a copy of your id? Do you use a website if it requires Facebook connect?
The issues of tight tracking you mention would be amplified by widespread use of id checks so I think it's essential not to do them often.
I personally don't want my identity checked unless I'm asking someone to trust me. And I'd rather use a trust-minimizing system before going there. You don't need your id checked when going to the restaurant or the theater. You need to check someone's id when they take your money and promise you something in return (and even then, there may be a better way).
> I don't see a single instance of trade being limited even if all transactions were between established identities.
Do you buy something if you need to send a copy of your id? Do you use a website if it requires Facebook connect?
The issues of tight tracking you mention would be amplified by widespread use of id checks so I think it's essential not to do them often.