An access handoff is the point where a verified identity is turned into usable credentials, device access, or a live account session. In other words, proof of who someone is becomes the ability to act as that person inside a system. This step can include issuing a temporary password, unlocking a mailbox, enrolling a device, or activating a help desk reset.
It matters because the handoff is a security boundary, not just an administrative step. If identity proofing is weak, or if IT provisions access later without rechecking the person, an attacker may slip through with forged documents, a stolen profile, or a socially engineered reset request. Defenders reduce this risk by binding verification to issuance, requiring strong revalidation at first login, and treating first-password, device enrollment, and account recovery as high-risk events. A safe handoff confirms that the same live person who proved identity is the one receiving the credential.