We take all possible measures to insure that www.Wedzig.com is a secure marketplace for both vendors and customers. This is the reason why you will be prompted to provide your TIN verification information when creating a Vendor account on Wedzig. The Taxpayer Identification Number (TIN), also known as the Federal Employer Identification Number (FEIN) or the Federal Tax Identification Number, is a unique nine-digit number assigned by the Internal Revenue Service (IRS) to business entities operating in the United States for the purposes of identification.