Although there are concerns about privacy and confidentiality over the use of police cameras, this should not suggest a blanket ban. There is a balance to be struck here between protecting people's privacy, and at the same time promoting police transparency and accountability.
As in Illinois, there must be measures that control police discretion on when to record, and when to stop to ensure protection of an individual's privacy. There have been attempts in different states to promote a blanket ban of footage, which is counterproductive to the aims of having a police cameras, and may be open to abuse as they may be disclosed to evidence the position of one side. To avoid this, automated technology that redacts footage should be made available. This provides disclosure, and does not take up departmental resources in redacting the material.
An additional safeguard to protecting privacy is to give the more vulnerable, for example, a domestic abuse victim, a say in the filming of the footage. Allowing police to have the discretion creates an environment where a victim, out of fear of themselves, or their loved ones being identified in the footage, will not even call for help. It may also impinge upon privileged conversations. It would therefore be more appropriate to ask a victim as soon as practicable whether they consent to a recording.