I didn't want to get into an argument over whether kids should be unattended at playgrounds or not - I don't know where the other poster is front and it seems to be based on age, density, region, etc. Where I grew up it would be weird to stay, in the city I am in it would be weird to leave them.

If you leave your kids unattended at a playground I don't see how the camera changes the risk factor in any meaningful way. Either a pedophile can expect there to be unattended children or not.