Identity verification stands as a cornerstone in the BPSS checking process. This article examines the methods used to confirm a candidate's identity, including the examination of official documents like passports, driver's licenses, and utility bills. We discuss the challenges associated with fraudulent documents and the techniques employed to detect them. The piece also highlights the legal implications of inadequate identity verification and how it can expose organizations to security risks and legal penalties. By employing advanced verification methods, such as biometric checks and digital authentication, Checkback ensures a robust and reliable identity verification process, safeguarding both the employer and national security interests.