Since it's easy to accidentally include one of your for-you-only photos or videos when sharing an album with iCloud friends, texting a group of images, AirPlaying a slideshow, or viewing your Photos widget on the Home Screen or Lock Screen, Apple has included a tool to help protect you from it ever happening: the Hidden album.
It could be evidence to implicate you in cheating or lying, pictures of your feces to show your doctor, unedited or sexualized selfies, screenshots of login credentials or tax documents, spy pics, saved nude sexts, or practically anything else. And the chances that you have an image or video you don't want anyone to ever see are high. No matter who you are, you likely use your iPhone's Photos app a lot since anything you take a picture or video of using the stock Camera app - and many other camera apps - lands there. Your iPhone has a powerful feature that can keep your secrets hidden from other people, and you'll never have to worry about sharing or showing someone something embarrassing or incriminating ever again.