The arrival of AirPods introduced a new problem cities weren’t prepared to deal with: dropped earpieces that end up on train tracks and other places from which they’re not easy to retrieve. This problem is truly a global one, with reports coming from multiple countries on this issue and the ways officials are dealing with it. Japan, it turns out, may have found the best solution.

Unlike increasingly archaic wired earbuds, AirPods and others like them are very small — drop one in the wrong place and you may never see it again. 
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https://www.slashgear.com/panasonic-made-a-special-tool-for-sucking-lost-airpods-off-train-tracks-06646110/