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There is a wireless camera, go to Taobao to find it.
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Yes, wifi, bluetooth, go to the Internet and search casually, a lot
It depends on the materials you use and the craftsmanship you make. The higher the degree of realization. The harder it is to find out if it's fake.
Definitely not, it's illegal to install cameras in toilets.
China's prisons are the safest prisons in the world, and there are few accidents, which is the advantage of Chinese socialism, the previous prisons were mainly distributed in remote areas, mainly engaged in production, with the development of society, the sound of the legal system, and now the prisons are basically all along the large and medium-sized cities, and the development of prisons is also very fast, the development of information technology has made great progress, all of them are covered by cameras, there are no dead ends, and the toilets are monitored.
Companies install cameras in toilets, and you can not only quit your job, but you can also call the police. >>>More
It's a great place to be.