Privacy-invading technologies (PITs) such as Body scanners; Public space CCTV microphones; Public space CCTV loudspeakers and Human-implantable microchips (RFID implants/GPS implants) are dealt with in this book. The book shows how and why laws that regulate the design and development of privacy-invading technologies (PITs) may more effectively ensure the protection of privacy than laws that only regulate data controllers and the use of such technologies. The premise is supported and demonstrated through a discussion on these four specific PITs as case studies. In doing so, the book overall attempts to explain how laws/regulations that mandate the implementation of Privacy by Design (PBD) could potentially serve as a viable approach for collectively safeguarding privacy, liberty and security in the 21st Century. This book will be of interest to academic researchers, law practitioners, policy makers and technology researchers.