[header] How to clean a biometric scanner [title] Disconnect the unit from the power source [title] Keep a soft cloth handy when you are about to start cleaning the scanning area. [title] Take care while lifting up and removing the front layer of the scanning area. [title] Remove the part where the finger is placed for scanning. 
[title] Clean the area using a soft piece of cloth. [title] If there are bigger dirt particles, try removing them using a light blower.