Apple rumored to be developing an item tracker like Tile. The tags will contain a user's contact information which any Apple device will be able to read if the device has been placed in "lost" mode.

So many questions. How to place a tag in "lost" mode if it is separated from the owner's iDevice? Will this be a battery drain for everyone else? What about privacy? But most importantly - will you need to buy a new tag when the batteries run low?

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