First device, communication server, second device and methods in a communications network

A method performed by a communication server for assisting a first device in handling a sharing of a presentation in an ongoing real-time communication session between the first device and a second device in a communications network,

• which the presentation is displayed in a first screen of the first device and is to be shared in a second screen of the second device, the method comprising:
• receiving from the second device, one or more second images towards a face of a second user of the second device, captured by a front facing camera,
• receiving from the first device, one or more first images of the presentation displayed in the first screen,
• examining the received one or more second images to identify reflections reflecting the presentation when displayed in the second screen that corresponds to the presentation displayed in the first screen according to the received one or more first images,
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have been identified, determining a feedback that the presentation is visible at the second screen, and
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have not been identified, determining a feedback that the presentation is not visible at the second screen, and
• sending to the first device, the determined feedback relating to whether or not the presentation to be shared is visible at the second screen.

A second device configured to assist a first device in handling a sharing of a presentation in a real-time communication session between the first device and the second device in a communications network,

• which the presentation is adapted to be displayed in a first screen of the first device and is adapted to be shared in a second screen of the second device, the second device further being configured to:
• when the first device initiates the sharing of the presentation, receive a trigger, triggering a front facing camera at the second device to capture one or more second images towards a face of a second user of the second device,
• receive from the first device, one or more first images of the presentation displayed in the first screen,
• examine the one or more second images to identify reflections reflecting the presentation when displayed in the second screen that corresponds to the presentation displayed in the first screen according to the received one or more first images,
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have been identified, determine a feedback that the presentation is visible at the second screen, and
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have not been identified, determine a feedback that the presentation is not visible at the second screen, and
• send to the first device, the determined feedback relating to whether or not the presentation to be shared is visible at the second screen.

A communication server configured to assist a first device in handling a sharing of a presentation in an ongoing real-time communication session between the first device and a second device in a communications network,

• which the presentation is adapted to be displayed in a first screen of the first device and is adapted to be shared in a second screen of the second device, the communication server further being configured to:
• receive from the second device, one or more second images towards a face of a second user of the second device, captured by a front facing camera according to a triggering,
• receive from the first device, one or more first images of the presentation displayed in the first screen,
• examine the received one or more second images to identify reflections reflecting the presentation when displayed in the second screen that corresponds to the presentation displayed in the first screen according to the received one or more first images,
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have been identified, determine a feedback that the presentation is visible at the second screen, and
• when the reflections reflecting the presentation corresponding to the presentation displayed in the first screen have not been identified, determine a feedback that the presentation is not visible at the second screen, and
• send to the first device, the determined feedback relating to whether or not the presentation adapted to be shared is visible at the second screen.