According to an investigation by Canada's Privacy Commission, the hackers likely used a long-range antenna to tap the stores' wi-fi networks.

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The ultra-compact ATSC-Mobile tuner receives mobile TV signals from a miniature antenna for use on-the-go, or a rod antenna, which provides broader range at home or in the office.

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It contains a device that measures such things as temperature, motion and light intensity, and it sports a miniature antenna and a radio with a range of 10 to 50 meters.

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In analog cellular days every phone had an external antenna, this gave the device better range when it was communicating with the cell sites.

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Celeno's CL1300 is the first solution of its kind to use 802.11 4x4 Implicit Beam Forming MIMO transmission technology to boost range and robustness independent of the receiving side Wi-Fi chipset technology (even single stream, single antenna Wi-Fi clients).

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