Parents and legal guardians can sign up to access MyChart for their children under the age of 13. For patients 13 to 17, parents or guardians can access their child’s account as long as the child signs the MyChart assent agreement. (This is necessary to make sure adolescents understand that some aspects of their health information will be available to their parents or guardians.) In addition, patients who are 13-17 may sign up for their own MyChart account as long as at least one parent or guardian has an account as well. If a child 13 to 17 declines to sign the assent agreement, neither the patient nor the parents or guardians can access the medical record using MyChart. (Exceptions to this policy are made for children with diminished capacity.) Patients over 18 may sign up for their own MyChart account. Adult patients can also grant temporary proxy access to other family members, such as parents, siblings or spouses. For patients over 18 who are of diminished capacity, proof of continued legal guardianship is required.