"Do Not Disturb" is a common sign used to indicate that a person does not wish to be interrupted. It is often found in hotels, where guests can hang the sign on their door to request privacy or to signal that they do not want housekeeping services at that time. This practice helps ensure that individuals can enjoy their personal space without disturbances. In addition to hotels, "Do Not Disturb" can also apply to electronic devices. For example, smartphones and computers have a "Do Not Disturb" mode that silences notifications and calls, allowing users to focus on tasks or enjoy uninterrupted time. This feature is useful for maintaining concentration and reducing distractions.