That is good to know with the dummy cameras.
OK, let me give you a detailed rundown of how our camera situation came to be....this is going to be long, so bear with me here

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Our hoa is 130 homes, and had been in existence for over 10 years. It only turned over to the homeowners a few years ago. It is un-gated with two entrances. The county maintains all of the streets, sewer etc.. For "common" areas it only has a small waking trail, two entrance signs (one at each entrance) and some undeveloped natural forest which is zoned to remain un-developed. Assessments up until this year were at $150 per year.
Since the community began, because we are in a higher crime metro, you get small periodic rashes of crime. Usually that means once a year you will get a couple of car break ins and once every few years something larger would happen. IE: a home break in. Whenever that happens we get the police involved, and usually hold a community meeting. Whenever that happens you get a small group of vocal people calling for extra security. Everything from cameras to gating the community. The gates, incidentally would require that the HOA take over maintenance of the roads, sewer, water etc. and increase our dues 10 to 20 times over....just as an FYI.
A few years ago, a survey was done after one of these incidents about the possibility of putting in some cameras at the entrance and even after that we only had about 33% that were in favor of them.
OK, so in June last year we had an incident where somebody came home late at night, was followed into their driveway, held up at gunpoint and had their car high jacked. We had a community meeting with the chief of police, who shared the crime statistics etc.. Also, at that meeting, the county DA was present and had (unsolicited) invited a camera vendor to give a talk about their product.
In July of last year, there was a small, informal meeting about security and the board asked them to form a committee and present ideas. At the time the board asked for options etc. for security cameras from the community as well. Interest in the security died down and nobody did anything with it.
Then in September a person close to the board leaked on a HOA website that the dues were going to go up from $150 a year to $250 a year. That message was quickly removed, but some of us saw it.
Then it was announced that the board has chosen a vendor (the one who was invited by the DA) for cameras and signed a contract for them for one year. At that point a lot of residents felt blind-sided by this and asked why this hadn't been discussed with the community. This particular one charges you a fee on a per year basis and then provides the HOA with the cameras and a portal to monitor them.
The installation of the cameras was another issue. In order to install the cameras a suitable locations in the community they needed to get easements from homeowners at both entrances of the community because they needed to be put on homeowners individual lots, not common property. When the contracts had been signed easements had not been granted. After a month our secretary sent out a message stating that they had the proper easements on one side of the neighborhood but on the other side people were not responding and they were looking for alternatives along with a side note (this was in writing) that they felt it was a shame that some people didn't want to grant the easements for the good of the community.
That message created some discussion on our official public chat group, including some expressing concern about the board publicly shaming owners for not wanting to grand easements. Both myself and others brought up the $150 - $250 per year increase that was mentioned along with this. At that point the secretary told us that an increase had not been decided on and to please not spread false rumors.
After another month, the cameras were installed. Then in December an official announcement came out from the board about the assessments and the increase was actually increasing from $150 to $300 a year. The cameras accounting for 1/3rd of the increase.
As luck would have it, the company that was providing the cameras contacted me about possibly doing some work on their product, so I went in and had a chance to see things behind the scenes. After speaking with them I decided to turn down the work for a number of reasons. I also saw some things (not under any kind of NDA etc.) while talking with them than concerned me about the reliability and effectiveness of the product. The biggest one was what the cameras are mounted at about 5 to 6 feet high and have a easily accessible switch that will power them down. AKA, someone could walk up to the cameras and disable them.
At this point I was not a board member, elections had not taken place and I shared all of this information with the community.
Then in mid January, we had a board meeting. At the meeting the secretary stated that we could get out of the contract with a 60 day notice for the cameras if we wanted to. Elections happened I got on the board and had a chance to see the contract. The contract for the cameras is actually 2 years not one and there is no cancellation clause. The contract also does not have any damages/penalties specified for an early breach and according to our lawyer we could probably cancel it without penalty if we ever wanted to early .....and the sales guy said that they could cancel early but... Anyhow I motioned to update the community with the actual status of that and it went through.
One other thing to note, this is probably the most cost effective solution if your going to have cameras but there are drawbacks etc., it went with a dues increase and given the controversial nature of it among the residents it may nor may not have had a majority of homeowners in support of it. Based on the previous poll etc. it probably didn't
Anyhow this is how they came to be in our community.