But that person is signing a consent form for the whole population, the whole human race.
It is required that the person pass a written test and sign an oath.
Probably it was not only the key, but the particular person signing it.
The person usually signed their name on the mail but it was a highly abused system.
I signed the visitor log; the last person had signed in two days before.
A person authorised by the company must sign every return.
It sounds great, and any rational person would sign up right away.
The person certifying the translation must sign at the end of the document.
Only one person at a time should sign into the system for the registrant.
The person responsible for the partner, for example the trustee or company secretary, should sign the form.