Categories Articles ‘Black Book’ suggests the feds have some unexpected surveillance tools, including a gravestone camera Post author By crystalg Post date January 9, 2020 The Verge – All Posts Tags 'Black, Book, camera, Feds, Gravestone, Including, Some, Suggests, surveillance, Tools, Unexpected ← Was A Ukrainian Passenger Plane Lost in the Fog of War? → The Best Way to Borrow From Friends and Family to Grow Your Business? Here’s How to Do It Right