TrustLine is a database of nannies and baby-sitters that have cleared criminal background checks in California. It’s the only authorized screening program of in-home caregivers in the state with access to fingerprint records at the California Department of Justice and the FBI. That’s what makes TrustLine unique. TrustLine is endorsed by the California Academy of Pediatrics. The California Department of Social Services and the nonprofit California Child Care Resource and Referral Network administer the program.