Tiny cameras that record on the sly can be hidden in all sorts of objects. With so many secret agents--both real and fictional--these days, we thought it might be helpful to examine a short list of modern-day high-tech spy gear. After all, who knows when you'll need invisible ink, or a code to pass messages in, or just the right bag to swap in a stairwell?
But before we get started on our surveillance, we must offer a big disclaimer about this collection of sneaky hardware (and software): Using any of this spy gear may be illegal or unethical, depending on how and where you use it. If you