Each Satochip hardware wallet is delivered non-initialized to the customer.
During the wallet initialization with the suitable Satochip client, the seed is shown on the screen and must be confirmed by the user.

THIS IS THE ONLY TIME the seed is visible to the user and the only opportunity to do a backup of the seed!

After that, it is no more possible to export the seed or any private key from the Satochip.
The seed and optionally the PIN code along with the derivation path are the information the user needs to recover the Satochip hardware wallet on another hardware wallet.