You know you should have an inventory of all your possessions for insurance purposes in case of fire, theft, or natural disasters. However, it can be difficult to collect and maintain all the information you need for the inventory. The GearID app for iPhone/iPod touch/iPad (running iOS 4.0 or later) lets you track product information (model, serial numbers, etc), purchase, warranty, and insurance information; you can even store photos of the gear and the receipts. If your iOS device has a camera, you can scan barcodes for easier data entry. The app has many more features and functions, and GearID is free in the iTunes store.