[cap-talk] delegatable-with-probable-cost capabilites

[David Hopwood]

ross mcginnis wrote:
> Just need to clarify something:
> Before you say that: "Ahh, it's easy to defeat the system.  All the lessee has to do is
> removed his first supplied harvester lock and put in a second (but different) of his
> own in then restore it back when the lease is up.",  I should say that only Ted can
> remove and replace the locks.  Ted has engineered the replacable locks so that they
> are held in place by a lock that only he has a key to.

How can this be implemented in practice? Ted would have to be sure that
there is no way for a lessee (Alice) to let a sub-lessee (Bob) into the
tractor without giving him the key.

-- 
David Hopwood