Unless you are sending printouts to the Secret Service, no one else, to
my knowledge, is even using this. It was intended to be able to aid in
tracking down counterfeiters.
Besides, all they can get is the serial number, date and number of
pages printed so far... I don't see anything "incriminating" in that...
to get your info from the serial number, they would have to issue a
subpoena to the manufacturer to turn over the registration record...
still no personal info will be there you don't want... last I checked,
no Social security number was required for registration, and it doesn't
fail registration if you give it bad (IE fictitious address) info.