Spy cameras are small, covert devices disguised as ordinary objects like buttons or watches to record video or photos without subjects' knowledge. They are popular for home security and can be built into clocks, pens, phones or other household items. Spy cameras allow users to capture secret footage either continuously or on a timed interval, automatically saving clips to a Dropbox account for remote viewing from any location. They operate covertly by disguising the camera and hiding recordings within user files and accounts, accessible only by password.