The invention relates to an external LED panel (10) that can be connected to an electronic user device (100) designed to emit messages relating to the activity of said electronic user device (100) in a passive and non-invasive form, comprising connection means (11a, 11b) compatible with an electronic device (100), an LED display (12, 10a), and at least one anchoring and supporting element (13) designed to orient the display (12, 10a) to a position that can be seen by third parties (101, 102, 103).
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