Available for specific models (like the A52 or newer S-series), this app can be found in the Samsung Galaxy Store or as an APK for self-repair scenarios. It is designed to automatically calibrate the screen and sensor during the parts replacement process.
Many modern Samsung devices "pair" the specific sensor ID to the motherboard for security; if a sensor or screen is replaced, the software must re-verify this bond. Self-Service Workarounds samsung fingerprint calibration tool
From a field perspective, the calibration tool aids in diagnosing specific failure modes: Available for specific models (like the A52 or
Are you currently seeing a after a repair, or are you preparing for a DIY screen replacement ? Calibration rubbers of the Optical Fingerprint Sensor Self-Service Workarounds From a field perspective
New OLED or LCD panels have slight variations in transparency or thickness that the sensor must account for.