It makes sense to consider installing hidden security cameras in your home, especially if you live in an area with a high crime rate. With both free and paid mobile apps, you can turn an old device into a fully functional hidden camera.

Here are four high-quality camera apps that will help you create a cheap security camera in minutes. All you need is an iOS or Android device and a computer.

The AtHome Camera Surveillance App can turn any old iPhone, iPod touch or iPad into a hidden security camera, as long as it is running iOS 7 or later. Like other surveillance apps, AtHome starts recording footage from the iOS device's webcam when it detects motion.

The app’s facial recognition technology sets it apart, however, as it starts recording video when it identifies a person. The app captures the person, generates an animated GIF of the individual, and sends it to you in a push notification.