Where a completly new identification is needed, the easiest is to assume another person's identity. Don't use another person's identity to commit fraud. Only a fool would use another person's identity for actions that might be considered fraud because it would guarantee a conviction even if otherwise, it mightbe considered normal business practice.
If you are using another person's identity and someone feels cheated, you don't have a defense. The facts will not matter. If you used another person's identity, the jury will believe that you were up to no good.
Using another person's identity is of limited value. You can use it to open a non'interest checking account or to obtain a debit card. And, you can earn wages provide they are not reported. You will need to take care to make certain that no wages, interest, or income is reported to the IRS. Certainly, the IRS willl ask or notify the person about any income, wages, or interest he did not report on his 1040.
I would be expecially careful about using the identity for any form of credit since it can be reported to the credit agencies. Nevertheless, assuming an identity can be use to disappear and even earn wages where a SSN is not required, such as mowing lawns, being a handyman, or buying a truck and moving furniture.