In order to electronically sign the FAFSA, you will need to get an FSA ID. Both the student and at least one parent will need their own FSA ID. Save your FSA ID, since it can be used each year to electronically sign your FAFSA and to access your federal financial aid records online. You should not share your FSA ID, nor should your parents share their FSA IDs with anyone. If you are eligible, you will use your FSA ID to access and sign any Stafford or PLUS loans you may need to apply for.
When you sign your FAFSA electronically, go to https://fafsa.ed.gov, select your application year, enter your FSA ID, and indicate you are a student before submitting the FAFSA application. One of your parents signs electronically by selecting the application year, entering parental FSA ID, indicating they are a parent, and identifying you as the student for whom they are electronically signing.