--- title: "User with One Device %" slug: "user-with-one-device" updated: 2024-03-15T11:04:52Z published: 2024-03-15T11:04:52Z canonical: "docs.mapp.com/user-with-one-device" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.mapp.com/llms.txt > Use this file to discover all available pages before exploring further. # User with One Device % Shows the percentage of visitors that used exactly one device (or browser). | Calculation | Visitors *[Filter: "Browsers, Unique = 1"]* / Visitors * 100 | | --- | --- | Please note that users can only be identified across multiple devices or browsers when passing the login information as a customer ID and/or when using the Cross Device Bridge.