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CSP86 Smartphone Based Metal Detector by AKYOR LLC — Kickstarter
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Metal Detector NE 555 Project | Homemade Cell Phone detector - YouTube
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Metal Detector Gets Help From Smartphone | Hackaday
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Handheld Contraband Cell Phone Detector
The best metal detector apps for Android that do work - Android Authority
How To Turn Your Smart Phone Into A Metal Detector - YouTube
