Whether your form of survival requires long journeys to find potable water or a trip to the nearest Starbucks, help is available from Bad Elf. Just plug GPS for Lightning Connector into any Lightning-equipped Apple tablet or iPod Touch, launch your favorite location app, and it instantly displays your current location. No additional software or drivers are needed. The $129 device supports GPS and GLONASS satellites, does not require Wi-Fi or batteries and is guaranteed to work with any location-based app in the App Store. The company also makes a version for devices with Apple's 30-pin connector.