Software developer can configure session state through web.config file for his current application (which is found in the same virtual directory as the .aspx web page files).  UseDeviceProfile is the one of possible modes for HttpCookieMode. When this mode is set ASP.NET attempts to determine whether the browser supports cookies by attempting to set and retrieve a cookie. This technique can correctly determine whether a browser supports cookies but has them disabled, in which case cookieless mode is used instead.

C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development: Build applications with C#, .NET Core, Entity Framework Core, ASP.NET Core, and ML.NET using Visual Studio Code, 4th Edition
ASP.NET Core 3 and Angular 9: Full stack web development with .NET Core 3.1 and Angular 9, 3rd Edition
C# in Depth, 4th Edition

<?xml version=”1.0” encoding=”utf-8” ?>
<configuration>
     <system.web>
     <!— other settings are omitted. —>
     <sessionState
        cookieless=”AutoDetect” cookieName=”ASP.NET_SessionID”
        regenerateExpiredSessionID=”false”
        timeout=”20”
        mode=”InProc”
        stateConnectionString=”tcpip=127.0.0.1:42424”
        stateNetworkTimeout=”10”
        sqlConnectionString=”data source=127.0.0.1;Integrated Security=SSPI”
        sqlCommandTimeout=”30” allowCustomSqlDatabase=”false”
        customProvider=””
     />
     </system.web>
</configuration>