Here are some steps you can take to try to fix a slow or unresponsive fingerprint or face ID scanner on your mobile device:

1. Restart your device: Restarting your device can often help reset the scanning software and free up any applications running in the background.
2. Update your software: Check that your device has the latest software version and security updates so the scanner will function properly.
3. Remove dirt and debris: Make sure your fingers, hands, and device are completely clean – dust or dirt can cause identification problems.
4. Reposition your device: Make sure the scanner is in the right position and angle for the sensor to identify your face and/or fingerprints.