Two years ago, the Tile Bluetooth tracking device raised over $2.6 million in a crowdfunding campaign, thanks in part to an expansive ad run that seemed to blanket the entire Internet. Elegantly designed with a square plastic housing, Tile paired a low-energy Bluetooth chip with a battery, letting you track any attached item using a Bluetooth 4-enabled iPhone. Each Tile can track keys, a purse, or even a roaming pet for a year before the battery dies, at which point you are supposed to replace it. The first Tiles shipped last year, and can now be had for $20 each versus their standard $25 retail price.

I skipped Tile because I don’t like products that need to be replaced when their batteries die. Over the course of reviewing thousands of Apple accessories, I’ve watched some companies waste vast quantities of plastic, metal, magnets, and packing materials, and I try not to buy things that are designed to be worthless after a short period of time. (Note: Users are encouraged to recycle Tiles by buying discounted replacements and mailing old units back to the company.) So a new Tile competitor called TrackR Bravo ($29) appealed to me. Made partially from anodized aluminum, it’s shaped like a dog tag and designed to be kept rather than tossed away. The core functionality is the same as Tile’s, but Bravo’s battery can be replaced with ease. You can also use Bravo to locate a misplaced iPhone, and optionally sound a separation alarm whenever your iPhone and Bravo get too far away from one another…

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