Elios Smart GPS Tracking Power Bank: Given our reliance on our smartphone, many of us have taken to carrying a portable battery. Given our personal security concerns, many of us carry some sort of device that lets our loved ones know where we are. This start-up has combined these two needs into a single item, a 10,000mAh power bank with built-in GPS location technology that doesn’t need a cell signal – and product endorsed by Elizabeth Smart. Instead of cellular, the Elios’ GPS works on a narrowband 600-1900MHz network, signal can be detected within 60 miles of a cell tower, it’ll work on any GPS system around the world (including Europe’s Galileo, Russia’s GLONASS, and China’s BeiDou), and its battery can power the GPS radio for up to two months. A Kickstarter campaign is due to kick-off next month, and Elios expects it to be available this summer for $149 plus $4.99/month for the GPS subscription.