A "Treasure Tag" sensor could be attached to a range of items, including a car, bike, keys, purse or wallet; then the smartphone, through the use of Bluetooth 4.0 and NFC (near-field communication) could lead you to the object and even emit an audio signal when close enough to announce the exact spot.
Its Lumia lineup will be updated to the Bluetooth 4.0 technology sometime in the coming weeks, the company said.
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