Depending on the amount of use, the reader window will  pick up dirt and salts from fingers over time and will need to be cleaned periodically.

Recommended cleaning:

  1. Apply the sticky side of a piece of scotch tape on the window and peel it away.
  2. If necessary, gently dab the window (do not wipe) with a soft cloth (not paper) dampened with a mild ammonia-based glass cleaner to remove any milky haze.

Never do the following:

  • DO NOT clean the reader window with paper
  • DO NOT pour glass cleaner directly on the reader window
  • DO NOT use alcohol-based cleaners
  • DO NOT submerge the reader in liquid