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A comment on ECDSA smartphone key extraction using $2 magnetic probe. Parent comment

Re:ECDSA smartphone key extraction using $2 magnetic probe by cnvogel on Friday March 25, 2016 @05:55AM (#11359240)
To me it looks like the coil of an wireless charger, or of an RFID reader.
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Re:ECDSA smartphone key extraction using $2 magnetic probe by y04nn on Friday March 25, 2016 @02:14PM (#11361698)
Yes, this is what you can find inside a wireless charging pad or inside a wireless charging phone. You can find them on ebay for $3. Look for "usb wireless pad".
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