Appeals courts disagree on whether the state can set up a semipermanent camera to watch someone, without a warrant.

I believe no one should be allowed to install a semipermanent remotely viewable camera (a surveillance camera) looking at a public place without a court order. However, in this case, a security camera which makes local recordings with no remote viewing could have done the same job.

I think that that use of the security camera is legitimate. A security camera serves to get information about any crimes visibly committed in a place, and that's what was done here.

However, it wouldn't hurt to require the state to get a warrant to set up an outdoor security camera to snoop on a particular person.