I don't get this whole thing on encryption anyway. It's not like the bad guys in any substantial numbers are using scanners or even Broadcastify to listen in. It has happened but in such small numbers that once again I'll say that it does not command the billions of dollars being spent to encrypt communications. Now they're going to try to say that they're encrypting their communication so that terrorists can't hear what's going on. Okay. Encrypt certain talk groups. But encrypting communications because they don't want us to know that Billy Bob was pulled over for a traffic violation is really kind of pointless. Certain things there's just no expectation of privacy for. When they run the license plate they don't run the complete address anyway. They give the street numbers only. What a complete waste of money.
Going to point out a few things here and add a few comments…
I've been in APCO meetings where the topic of encryption comes up. There are many reasons to encrypt radio traffic. Keeping information from the "bad guys" is a small part of it. Specific cases have been brought up, though. One in particular was a school shooting. Some well meaning scanner listener posted the incident on social media. So while law enforcement was busy trying to deal with that, treat victims, etc. they now had to deal with a few hundred frightened parents mobbing the scene. Scene security is important, and having to take a majority of your forces and use them for crowd control isn't a good investment. You can blame that one on social media, scanner listeners, streaming, anything you want, but the end result is that it's a situation that can easily be dealt with.
Encryption doesn't cost "billions". Most digital radios already include some level of encryption standard. It's a case of turning it on. Due to natural attrition, older analog only systems are getting replaced with digital. There's little cost difference in going encrypted vs. not.
Agencies have a number of ways of providing up to date information to the public that doesn't involve scanners. Immediate access to all radio communications is not a right we have. Just like we don't have the right to listen in on telephone traffic to/from an agency, read their e-mails, etc. There are ways to access information. Immediate access, unfortunately, is going away.
A lot of what we see happening is just basic IT security measures. California DOJ is pushing on that hard and agencies are being forced to comply. We just went through an inspection and passed, and a lot of that had to do with having secure networks, secure access and all of us involved having up to date background checks, clearances and training. DOJ is -not- requiring encryption. The encryption we see is locally driven. Local agencies are scrambling to comply with all the recent changes, and in some cases are going overboard. Some of that is because counsel is telling them to do everything they can. Some of it is misinterpretation. Some of it is "because we can".
(I'm not for or against encryption. It's just a reality of the job)
I agree with keeping dispatch channels/talk groups in the clear and encrypting tactical and administrative channels. However, this puts burden on the officers and dispatchers to remember to change channels based on the traffic. Dispatchers are already overworked. Their jobs have changed considerably in the last decade. There is a natural tendency to make things easier for them. One way to do that is not require changing channels/talk groups based on traffic. When looking at the overall picture, the "Just encrypt everything." approach is easy. I can tell you that making life easier for scanner listeners, hobbyists, and/or media is no where on the list of concerns.
Encryption does not necessarily prevent interoperability. There are ways that this can be addressed. It does not include giving encryption keys to the general public, scanner listeners, amateur radio operators, those with background checks, media, etc.
I understand. It's frustrating for the hobbyists and those interested in hearing what our public servants are up to. However what we've enjoyed has been a product of technology, costs and entropy. That's changing. Technology has made it easy to encrypt. Costs have dropped (or gone to zero in some cases). Entropy is getting a kick in the arse by new requirements.
Again, I'm neither for or against encryption. Just laying out what I see, what I experience and a bit of what I'm exposed to.