Identity is widely accepted to be Name + (residential) Address. This applies particularly in establishing Voting rights (as a result of Entitlement & Representation considerations) and in Banking with the K.Y.C ( Know Your Customer ) needs of a financial intermediary.
Work Address should also be considered, as should Notification Address and electronic addresses like ...
The historical assumption that a letter is deemed to be received when it is "inducted" into the Postal mail stream is not reliable given the modern decay of many postal services.
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