SURVEILLANCE SYSTEM
Apps can convert an old iPhone that has access to WiFi into a surveillance camera and motion detector. Presence, which is a free app, provides a live stream from the area you want to monitor. You can set it up to record video clips when it detects motion, too.
If you buy a robotic viewing stand for about $100, you can move the camera 360 degrees rather than stick with a stationary view.
COOKBOOK
No need to go through recipe books or hunt around for other devices when you have a kitchen iPhone. Download a cookbook app, such as My Recipe Book (99 cents) or Big Oven (free), and just leave the device on the kitchen counter. It takes up almost no space and will hold far more recipes than any book.
EXTRA STORAGE
Need a place to store old photos and music or other files? Turn your old phone into a storage drive using a free app like USB & Wi-Fi Flash Drive.
VOICE RECORDER
Why buy a digital voice recorder when you have a retired iPhone? Using any of several free apps, including Voice Recorder and Voice Record Pro, you will have a designated memo recorder or a device to record interviews and speeches.
DOCUMENT SCANNER
Genius Scan and Doc Scan are two apps that will turn an iPhone into a handy portable scanner that you can use for work, school reports, genealogical research, or recording receipts. And they will not cost you a penny.
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