As technology evolves, consumers often find themselves with outdated, yet functional, smartphones tucked away in drawers—forgotten relics of an upgrade cycle that demands the latest and greatest. But before you relegate your old iPhone or Android device to the tech graveyard, consider repurposing it as a cost-effective home security camera.

The premise is straightforward: with the right app, any smartphone equipped with a camera can transform into a surveillance device, offering peace of mind when you’re away from home. Not only is this an economical solution but it’s also environmentally friendly, giving your old hardware a new lease on life.

Setting up your old smartphone as a home security camera is relatively simple and requires only a few steps. First, choose a location with a clear view of the area you want to monitor. Then, install a security camera app on both your old phone and your current phone—many of which are free or low-cost. Popular options include Alfred Home Security Camera for Android and iOS devices, Presence for iOS, and IP Webcam for Android.

Once you’ve chosen an app, follow the instructions to set up the old phone as the camera. This typically involves positioning the phone securely in your chosen spot and plugging it into power since it will need continuous charging for 24/7 surveillance.

Next, use the app on your current smartphone to connect to the camera device; this turns it into your personal monitoring center where you can view live footage or receive alerts when motion is detected. Some apps even allow two-way audio communication, enabling you to listen and speak through the device—ideal for warding off intruders or checking in on pets.

One significant advantage of using an old smartphone as a security camera is that you already know its interface and how to troubleshoot any issues. It’s also portable; unlike traditional cameras that require complex wiring and installation, these makeshift surveillance units can be moved easily from room to room or even taken with you while traveling for quick security set-ups anywhere there’s Wi-Fi.

In summary, don’t be too quick to discard that old smartphone. With minimal effort and little to no cost, it can become a handy tool in bolstering your home’s security system. Not only do you save money compared to purchasing specialized cameras, but you’ll also feel good about putting existing technology to excellent use—smart recycling for smart homeowners.