Would teleportation kill the original you?

Under current physics, a classic scan-and-rebuild teleportation would very likely destroy the original body, so in the ordinary sense it would kill the original physical you. But whether that means “you” survive is a philosophical question.

A few distinctions matter:

• Quantum teleportation in modern physics does not move matter or a person; it transfers a quantum state from one system to another. In that process, the original quantum state is destroyed as part of the transfer.
• A hypothetical human teleportation device that scans you and reconstructs you elsewhere would almost certainly require the original to be dismantled or otherwise not remain intact.
• The recreated person could have your memories, personality, and body structure, but whether your first-person consciousness continues is not something physics can currently settle.

So the short answer is: scan-and-rebuild teleportation would likely destroy the original you physically, but whether that counts as “killing you” depends on your view of personal identity and consciousness.