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Ultra-Slim Round Fingerprint Sensor and 6-pin Cable : ID 4750 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Gravity: Capacitive Fingerprint Sensor with 80 Fingerprints - DFRobot
Dy50 Fingerprint Reader Sensor Module Fpm10a Optical Fingerprint Module For Arduino Locks Serial Communication Interface Tools - Smart Human Body Sensors - AliExpress
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