"Another such conflict arises from the extra free programs available
today. iBiquity is seeking FCC approval for conditional access, that
is, enabling the extra programs to be available only by paid
subscription (on future models of HD Radio). NDS, a maker of digital
media encryption technology, has a deal with iBiquity to provide HD
Radio with an encrypted content-delivery system called RadioGuard. NDS
claims that RadioGuard will provide additional revenue-generating
possibilities. iBiquity has stated that RadioGuard will become a
standard feature of the HD Radio system. These competing capabilities
mean that purchasers of early models of HD Radio have no guarantees of
continued broadcasts of either high-quality audio or extra channels.
Audio quality will suffer as broadcasters decide to subdivide their
streams into extra HD-2 and HD-3 channels. And if the extra channels
become subscription channels, they will become invisible to older
radios without RadioGuard (and to those unwilling to pay for them)."
"What is NDS RadioGuard? NDS RadioGuard is the first conditional
access solution for HD radio, the in-band on-channel (IBOC) solution
that enables digital multicast and multi-channel broadcasting."
That will piss-off those few consumers!