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Wrapping cellphones in tin foil will prevent outside entities from gleaning information from it without your knowledge. Image by Heather Hopkins.
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Other Images in this Gallery
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- Our personal gadgets are the hardest-working surveillance units. Image by Simon.zfn
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- Wrapping cellphones in tin foil will prevent outside entities from gleaning information from it without your knowledge. Image by Heather Hopkins.
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- The all-watching eye of surveillance cameras. Image by Jonathan McIntosh.