The Registration form held by HPD is not a 4473, is not an ATF or federal form but a State form. The Privacy Act of 1974 allows for sharing of data under certain circumstances (Like for Like) By providing HPD with finger prints and such they could argue you have given consent.
I am not saying this to be a dick but rather looking at if from the point of view on how i would defend this if i were the city/state.
Dude, this was an EXAMPLE of what should be on government forms requesting information: what, why, if mandatory, and retention.
Here's the HRS statute on sharing information with other agencies.
http://www.capitol.hawaii.gov/hrscurrent/Vol02_Ch0046-0115/HRS0092F/HRS_0092F-0019.htmThe first paragraph says:
Limitations on disclosure of government records to other agencies. (a) No agency may disclose or authorize disclosure of government records to any other agency unless the disclosure is:
(1) Necessary for the performance of the requesting agency's duties and functions and is also:
(A) Compatible with the purpose for which the information was collected or obtained; or
(B) Consistent with the conditions or reasonable expectations of use and disclosure under which the information was provided;
The PURPOSE for which the information was collected in the past was for approval or denial of an applicant's permit to ACQUIRE. Once that permit is approved and the firearm acquired, that should be the end of it. The purpose of the information was realized, and is no longer authorized for additional uses. The purpose was never to use that information to continually monitor the REGISTRANT for future revocation of that permit/registration. Once you get past the permit process, then you have to look into the purpose for the registration information. That's a little more vague. It's primary use is to establish a means of identifying the owner of a firearm as part of an investigation. That's being flipped around now to determine not which person owns a specific firearm, but what firearms a person owns.
I say it's vague because the purpose for registration isn't on the forms nor in the statutes. The best I can deduce is you are required to register all guns because the law says you have to!
Of course, the registration process is just the process. The real reasons have to do with control and verification. The Cops want to verify the guns meet Hawaii "legal to own" laws. verify you are who you claim to be, check the lineage (where you got it), look for guns which were stolen, assign an owner so they know who to hold legally responsible should they find a violation, etc. There's no way they are going to list all the potential uses of a registration on the form or anywhere in writing. The best we could get would be just a vague "IAW HRS 134-2 and HRS134-3". the same thing that's on the permit to acquire.