Section 34.05.01.020 - UNIQUE IDENTIFIER NUMBER (UIN)01.UIN System. The Secretary of State's Office will use a UIN system that has been approved and certified by the USDA for the Idaho Central Filing System in place of the former use of complete social security numbers as a means of debtor identification.02.Social Security Numbers and Tax Identification Numbers. With the use of UINs, as approved by the USDA, the SOS will no longer require or accept social security numbers or tax identification numbers, in total, on Farm Products Financing Statements. Only the last four (4) digits shall be required and used. The SOS will not provide social security numbers or tax identification numbers, in total, to any person or business entity, in any format, from Farm Products Financing Statements.Idaho Admin. Code r. 34.05.01.020