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However, a wireless sensor that could be used underwater would be useful in various scenarios.
For example, Reference 2 imagined installing a commercially available waterproof camera under a cage of a fish farm to measure the number of fish therein. In that case, it would be useful if the data acquired by the underwater camera could be seen in real time above the water.
Alternatively, using inexpensive commercially available BLE sensors to assess in real time the water temperature and how the shape of the cage was changing would help to make aquaculture more efficient.
In addition, if the smartwatches or smartphones worn by divers could connect to the Internet while underwater, the divers could use various services while underwater.
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IEEE/ICACT20210234 Slide.04
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