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Patrick McKenzie's article mentioned in comment (3) is very important. Most forms and procedures (paper and digital variants) apply unnecessary and incorrect restrictions to field values. The mistakes are carried all the way up into legislation where it is assumed that everyone has a permanent physical address.

Some other very common mistakes include assumptions that people:

* have a physical address

* have one physical address

* use a mobile phone

* use any sort of telephone

* can access the Internet

* use email

* know their mother's maiden name

* have had a pet at some stage

* attended a school (and other password recovery question options...)

* have an occupation

* have one occupation

* have a credit card

* have a bank account

* have 20:20 vision

* can read English and understand what is expected of them in a form

* know their own date of birth/age

* know their own name

* know their place of birth

* have money to print forms, send letters or make phone calls

And importantly, assumptions are made that people will will agree to provide information that is not required for the interaction/transaction.

Common sense usability is to not ask unnecessary questions or collect unnecessary data.

You should not assume that these assumptions are indeed assumptions. For example, banks want you to have a physical address, so they can track you down for debt.

UK readers... Please remember that students are 1 of the only groups to officially have 2 permanent addresses. Furthermore, it's illegal to collect unnecessary information.

A rental address with 1 month remaining on the lease is usually accepted as a permanent physical address. How does this allow debtors to track down debts?

In the UK, what would an official permanent address be? Electoral registration?

Yeah, i think so.

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