By entering a PIN with a Pencil with eraser, you can avoid touching a device that would otherwise be touched by many people in rapid succession, so that bacteria and viruses are transmitted.
Sciencia58 and <a href="https://en.wikipedia.org/wiki/nl:User:Michiel1972" class="extiw" title="w:nl:User:Michiel1972">Michiel1972</a> at <a href="https://en.wikipedia.org/wiki/nl:" class="extiw" title="w:nl:">Dutch Wikipedia</a>
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Own work from Sciencia58 using the photo <a href="//commons.wikimedia.org/wiki/File:Wijsvinger.jpg" title="File:Wijsvinger.jpg">File:Wijsvinger.jpg</a>