During the E-Filing process, you will come to a PIN Details screen, after you enter your IRS payment information. You will be asked to enter any 5 digits as your PIN, which serves as your electronic signature when E-Filing with the IRS. You will also need to enter your birthday. You will also need to verify your account information with the IRS by using your prior year Adjusted Gross Income, prior year PIN or prior year Electronic Filing PIN. This video walks you through the process.