Horizon Client features have specific hardware and software requirements. Smart Card Authentication RequirementsClient devices that use a smart card for user authentication must meet certain requirements. Client Device Certificate Authentication RequirementsWith the client device certificate authentication feature, you can set up certificate authentication for client systems to Horizon Client for Linux. Unified Access Gateway authenticates the client systems. The SoftHSM2 library manages the distribution and deployment of certificates to the client system. After successful device authentication, the user must still perform user authentication. System Requirements for Serial Port RedirectionWith the serial port redirection feature, end users can redirect locally connected serial (/dev/ttyS) ports, such as built-in RS232 ports or USB-to-Serial adapters, to their remote desktops. To support serial port redirection, your Horizon deployment must meet certain software and hardware requirements. Requirements for Using URL Content RedirectionWith the URL Content Redirection feature, URL content can be redirected from the client machine to a remote desktop or published application (client-to-agent redirection), or from a remote desktop or published application to the client machine (agent-to-client redirection). System Requirements for Real-Time Audio-VideoReal-Time Audio-Video works with standard webcam, USB audio, and analog audio devices. The feature also works with standard conferencing applications. To support Real-Time Audio-Video, your VMware Horizon deployment must meet certain software and hardware requirements. System Requirements for Scanner Redirection End users can scan information into remote desktops with scanners that are connected to their local client systems. They can control scanner settings by selecting options in the remote desktop interface. To use this feature, the remote desktops and client computers must meet certain system requirements. System Requirements for Multimedia Redirection (MMR)With multimedia redirection (MMR), the multimedia stream is decoded on the client system. The client system plays the media content so that the load on the ESXi host is reduced. System Requirements for HTML5 Multimedia RedirectionHorizon Agent and Horizon Client, and the remote desktops and client systems on which you install the agent and client software, must meet certain requirements to support the HTML5 Multimedia Redirection feature. System Requirements for the Session Collaboration FeatureWith the Session Collaboration feature, users can invite other users to join an existing remote desktop session. To support the Session Collaboration feature, your VMware Horizon deployment must meet certain requirements. Parent topic: System Requirements