  We give an explicit toy qubit transport model for transferring information
from the gravitational field of a black hole to the Hawking radiation by a
continuous unitary transformation of the outgoing radiation and the black hole
gravitational field. The model has no firewalls or other drama at the event
horizon, and it avoids a counterargument that has been raised for subsystem
transfer models as resolutions of the firewall paradox. Furthermore, it fits
the set of six physical constraints that Giddings has proposed for models of
black hole evaporation. It does utilize nonlocal qubits for the gravitational
field but assumes that the radiation interacts locally with these nonlocal
qubits, so in some sense the nonlocality is confined to the gravitational
sector. Although the qubit model is too crude to be quantitively correct for
the detailed spectrum of Hawking radiation, it fits qualitatively with what is
expected.
