The two senses principle gives people their right to communicate in emergencies
Being locked in an elevator is an exceptional situation to which people react very differently. While one person remains relatively relaxed, the other may experience a racing heart, panic, sweating or shortness of breath. If this is not counteracted, it can lead to a serious emergency for people with health problems. The most important thing for those affected in this situation is the feeling of not being alone.
The UN Convention on the Rights of Persons with Disabilities obliges the signatory states to ensure that people with disabilities have equal access to the physical environment, to means of transport, information and communication as well as to other facilities and services that are open to the public or are made available to them.