Other rude behaviours have the effect of communicating disrespect for other people. In extreme cases, this can rise to complete and deliberate social exclusion of the disrespected person; in others, the rudeness is only temporary and may be unintentional. For example, it can be rude to use electronic devices, such as mobile phones , if this results in ignoring someone or otherwise indicating that the present company is less interesting or important than the people elsewhere or the text messages they send. Similarly, cutting in line signals that the person cutting in the line believes himself to be more important that the people his action delays. Barging into someone else's space without permission, whether that be a violation of personal space or crashing a party , is rude because it does not respect the person's property rights or right to make personal choices.