How do I clean my ekey fingerprint scanner?

The ekey fingerprint scanner is basically maintenance-free.

Clean the sensor surface of the fingerprint scanner and the fingerprint scanner itself with a damp (not wet) nonabrasive cloth. Q-tips, microfiber cloths, and glasses-cleaning cloths are suitable for this purpose. Materials containing cotton, paper towels, paper tissues, kitchen sponges, damp dish towels, and kitchen rolls are not suitable. Use clean water without adding detergent. Treat the sensor surface with care.

If it is necessary to disinfect the entire fingerprint scanner including the sensor, you can use watery and alcohol-based agents. However, these should be able to dry quickly in the sensor area. The varnish of the fingerprint scanner is very resistant to all common cleaning agents and disinfectants with less than 10 minutes of exposure.