A display transmitter device for wireless provision of display content to a display receiver device, wherein the display transmitter device is a wearable device, a smartphone or a computer tablet and comprises: a secure execution environment; and a display communication interface manager within the secure execution environment to: communicate, to the display receiver device, via the Miracast display protocol, a capability for secure communication to receive an input from an input device coupled to the display receiver device for the display receiver device to control the provision of the display content from the display transmitter device; determine that the display receiver device has a capability for secure user input back channel, UIBC, communication to transmit the input from the input device coupled to the display receiver device; authenticate the display receiver device; negotiate with the display receiver device one or more secure parameters for the secure communication of the input from the input device coupled to the display receiver device, wherein the one or more secure parameters are stored in the secure execution environment; and receive the input in a secured form from the display receiver device, wherein the input in the secured form is secured based on the one or more secure parameters negotiated, and wherein the input device is a selected one of a microphone, an accelerometer, a gyroscope, a pressure sensor, a humidity sensor, a proximity sensor, a position sensor, or a temperature sensor, wherein the input in the secured form from the display receiver device is encrypted according to high-bandwidth digital content protection, HDCP, protocol and sent by a user input back channel, UIBC. a secure execution environment; and a display communication interface manager within the secure execution environment to: communicate, to the display receiver device, via the Miracast display protocol, a capability for secure communication to receive an input from an input device coupled to the display receiver device for the display receiver device to control the provision of the display content from the display transmitter device; determine that the display receiver device has a capability for secure user input back channel, UIBC, communication to transmit the input from the input device coupled to the display receiver device; authenticate the display receiver device; negotiate with the display receiver device one or more secure parameters for the secure communication of the input from the input device coupled to the display receiver device, wherein the one or more secure parameters are stored in the secure execution environment; and receive the input in a secured form from the display receiver device, wherein the input in the secured form is secured based on the one or more secure parameters negotiated, and wherein the input device is a selected one of a microphone, an accelerometer, a gyroscope, a pressure sensor, a humidity sensor, a proximity sensor, a position sensor, or a temperature sensor, wherein the input in the secured form from the display receiver device is encrypted according to high-bandwidth digital content protection, HDCP, protocol and sent by a user input back channel, UIBC. communicate, to the display receiver device, via the Miracast display protocol, a capability for secure communication to receive an input from an input device coupled to the display receiver device for the display receiver device to control the provision of the display content from the display transmitter device; determine that the display receiver device has a capability for secure user input back channel, UIBC, communication to transmit the input from the input device coupled to the display receiver device; authenticate the display receiver device; negotiate with the display receiver device one or more secure parameters for the secure communication of the input from the input device coupled to the display receiver device, wherein the one or more secure parameters are stored in the secure execution environment; and receive the input in a secured form from the display receiver device, wherein the input in the secured form is secured based on the one or more secure parameters negotiated, and wherein the input device is a selected one of a microphone, an accelerometer, a gyroscope, a pressure sensor, a humidity sensor, a proximity sensor, a position sensor, or a temperature sensor, wherein the input in the secured form from the display receiver device is encrypted according to high-bandwidth digital content protection, HDCP, protocol and sent by a user input back channel, UIBC.