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Function: key llDetectedKey( integer number );

Returns a key that is the UUID of the detected object or avatar number.

• integer number Index of detection information

number does not support negative indexes. Returns an empty key if number does not correspond to a valid sensed object or avatar.


llDetected* functions only work if called from within Detection events (collision, collision_start, collision_end, sensor, touch, touch_start, touch_end) or in functions called by Detection events. They will fail silently and return unusable values if called during other events.


  • If number is out of bounds the script continues to execute without an error message.
  • Events that enable the llDetected* functions always return at least one detected item.
    • Detection events are not raised if there is nothing detected.[1]
    • The detection event's items detected parameter is initially never less than 1.[2]
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    touch_start(integer num_detected)
        llSay(0, "touch_start event: key of avatar touching: " + (string) llDetectedKey(0) );

See Also


•  Detected

Deep Notes

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  1. ^ The exception is no_sensor but it doesn't enable llDetected* functions.
  2. ^ Like all event parameters, the user can overwrite the initial value.


function key llDetectedKey( integer number );