Unique visitors count is calculated wrongly

I am using Matomo in local, Where i am the only visitor. I am expecting the unique visitor count to be 1. while the actual count is different from it. How is the actual unique visitors calculated?

On How does Piwik detect unique and returning visitors? (with User ID, Visitor ID from cookie and/or fingerprint) FAQ - Analytics Platform - Matomo you will find the information you are looking for.