This entry was published at least two years ago (originally posted on November 30, 2020). Since that time the information may have become outdated or my beliefs may have changed (in general, assume a more open and liberal current viewpoint). A fuller disclaimer is available.
Washington state has enabled COVID-19 exposure notifications for iPhone and Android users. More information and installation instructions are available at WANotify.org.
You should enable this! Also, stay at home when you can, mask and social distance when you can’t.