Well, according to Pete's Law Dictionary :D
Surety.,
Definition:
Something somewhere, that makes it sure, that a debt will be discharged somehow.
So I am trying to fit this into a computer system, where is surety in a computer system :D
Printed copy · Anthology Volume 8, page 570Printed copy from The Tender For Law Anthology, Volume 8, page 570 (printed 13 June 2014). Added by this site; not part of the Facebook export.