Instead of tracking kids with cellphones, some folks in South Korea want to track those caught fish. That's right -- SK Telecom is enabling fishermen to keep tabs on the fish they're trolling for using a float-shaped ultrasonic transmitter tethered to a cellphone and a fishing line. The phone then shows the lowdown on just what's happening underseas, including water depth and fish location. Should be an interesting niche for SK Telecom to recruit the high-tech fisherman that was just waiting for a solution like this.

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SK Telecom hooks up Korean fishermen