Props in RoboCupJunior OnStage
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**What are props?**
Props are objects used on stage to support or enhance a performance. In RoboCupJunior OnStage, props should only be used if they add clear value to the *robotic performance*.


Types of Props
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**1. Interactive Props (Encouraged)**
Interactive props are objects that *interact with robots or performers* using sensors and/or actuators.

- Must demonstrate *active interaction* (e.g. triggering sensors, responding to movement, controlling outputs)
- Can include *wearable items* (e.g. gloves or costumes that communicate with robots)
- Should contribute directly to the technical and creative elements of the performance

✅ **Highly encouraged**, as they enhance both innovation and robotics integration.


**2. Static Props** 
Static props are *non-interactive objects* used for decoration and “scene setting”.

- Do not interact with robots or other props
- Examples: cardboard scenery, painted backdrops, stage decorations
- Can make it harder for judges and the audience to see the robots clearly

⚠️ **static props should make a significant contribution** to the overall performance.

Teams should:

- Consider using the screen backdrop instead of large set pieces
- Convert static props into interactive elements where possible
- Minimise the number of purely decorative items


Good Practice for Using Props
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- Focus on small, lightweight, and purposeful props. 
- Ensure props enhance the robotic performance, not distract from it
- Props that do not add value are ignored in judging
- Teams must be able to set up and remove all props without assistance
- Use sustainable or recycled materials wherever possible

**Examples of props good to be used during a performance include:**

- A wall that is used by a robot to show how it can avoid the wall. The wall is a static prop.
- A door that opens when a robot gets close to it either by the robot sending a signal to the door to signal or the door has a sensor that detects the robot getting closer. The wall is an interactive prop as it uses sensors to interact with the robot.
- A tree that receives a signal from the door (in the above example) and swings.  The tree and door are interactive props. 
- A glove with a QR code (static prop) triggers an action on a robot when it scans the QR code.


🗝Key Message
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**Quality over quantity:**
A small number of well-designed interactive props is far more effective than a stage filled with static decorations.