Secure DAC?

[Ben]

> I fail to see how this would increase cryptographic potential.  However, 
> it would seem to mask the device's EMR.  The application notes state that
> it is useful in CRT display drivers, audio encoders, &c.  These are all
> devices that are succeptable to TEMPEST monitoring (or whatever the
> correct name is).  If one output goes to the desired next stage (the

The spooky term for it is MASINT-Measurement and Signals INT.

Ben.