1. Touch screen technology: By combining touch screen technology with LED displays, viewers can operate directly on the screen, such as selecting display content, adjusting display effects, etc. This interactive approach increases audience participation and experience.

2. Interactive projection system: The interactive projection system captures and shoots the participants' movements through capture devices (such as sensors), and then analyzes them by the image analysis system to produce corresponding interactive effects. For example, when the viewer takes action in a specific area, the content on the screen changes accordingly.

3. Sensor technology: Sensors can be used to detect the position and movement of the audience, thereby enabling interaction with the LED display. For example, when a viewer approaches the screen, sensors can trigger specific interactive content or information display.

4. Augmented reality (AR) technology: Combined with AR technology, LED displays can display virtual information combined with the real environment. The audience can see this superimposed information through AR glasses, thereby achieving an interactive experience.

5. Digital multimedia content: By designing rich digital multimedia content, such as videos, animations, games, etc., audiences can obtain information or participate in activities by touching the screen or interacting with it.

6. Social media integration: Integrate the LED display with social media platforms. Audiences can participate in voting, ask questions or express opinions through mobile phones or other devices. These interactive contents can be displayed on the LED screen in real time.

7. Customized interactive software: Develop specialized interactive software so that the LED display can respond to the audience's specific behaviors or instructions and provide a personalized interactive experience.

8. Virtual reality (VR) technology: Although VR technology is usually used with head-mounted devices, it can also be combined with LED displays to provide viewers with an immersive virtual experience.

9. Voice-activated interaction: By integrating voice recognition technology, viewers can interact with the LED display through voice commands.

10. Motion tracking technology: Use motion tracking technology to capture the audience’s body movements and convert them into interactive elements on the screen.

To sum up, through the application of these interactive technologies, LED displays can not only display static or dynamic information, but also provide a richer and more attractive interactive experience, thus improving exhibition participation and audience satisfaction.