We already spoke about plenty of surveillance devices. Voice recording watches, bubblegum-sized cameras, etc. However, imagine a situation, when you need to make a step forward in this domain, and make high quality video and sound recordings with a candid camera. Usual miniDV cameras are too big to be well hidden, so you must think about some sort of camouflage. Which thing will be the perfect camouflage of a hidden recorder? Probably a boring looking book will do.