I tried a metal detector app on my smartphone... and it actually worked
Metal And Gold Detector - Apps on Google Play
How To Turn Your Smart Phone Into A Metal Detector - YouTube
Garrett Goldmaster 24k Metal Detector | Garrett Metal Detectors
Amazon.com : Minelab GO-FIND 66 Metal Detector with GO-FIND Black Carry Bag for Transport : Patio, Lawn & Garden
Smartphone app for CSP86 Series of Metal Detectors with Graphical Scan | mobile app, metal detector | This video explains the smartphone app for CSP86 families of metal detectors. CSP86 series are
Metal Detector Gets Help From Smartphone | Hackaday
Homemade Metal Detector
Test: smartphone metal detector - ENG - YouTube
Simple Smartphone Metal Detector Experiments | Android | Maker Pro
A Smart DIY Metal Detector | Hackaday
Metal Detector Gets Help From Smartphone | Hackaday
Do mobile phones interfere with metal detectors?
Bluetooth metal detector uses your smartphone to do its thinking
Homemade Metal Detector
3 Ways to Build a Metal Detector - wikiHow
How to turn an old smartphone into a metal detector
3 Ways to Build a Metal Detector - wikiHow
Homemade Metal Detector
