The legality of home security cameras generally depends on the "reasonable expectation of privacy." Laws vary by state and country, but several general principles apply: Security camera pros and cons: an in-depth look | Blog Ajax
However, areas in plain view from a public street (the sidewalk, your front yard, the exterior of your house) generally have no expectation of privacy. Legally, you can film the sidewalk all day long. gynecologist hidden camera incomplete version
, who was accused of installing hidden cameras in his office to film patients The legality of home security cameras generally depends