Skimming off wireless electromagnetic signals for surveillance ... at least some level of encryption using the HDCP system, HDMI cables weren’t thought to be particularly susceptible to it.

A Miracast-based device from Microsoft that plugs into a TV, projector or monitor via HDMI and USB. Starting with Windows 8, the Wireless Display Adapter (WDA) lets a Miracast-enabled Windows PC ...

Ensure that both your TV and Roku device have the latest firmware and software updates. Outdated software can lead to compatibility issues and HDMI connection problems. Check for updates in the TV's ...

With wireless casting making its way to the market ... you can use a USB-C-to-HDMI adapter as a workaround. Though MHL works ...