Stop. Read. React.
In an emergency, your mobile phone will receive an alert via S!RENEN with advice about how to stay safe. Watch the video or explore the site to learn more.
New mobile-based public warning system
What is S!RENEN?
S!RENEN is Denmark’s mobile-based public warning system. Authorities are now able to transmit alerts directly to your mobile phone if you are in an area where many people are exposed to danger. S!RENEN has a distinct sound and vibration that clearly differs from text messages and push notifications.
It is not an app, and you don't need to download anything. Most likely your phone can already receive warnings from S!RENEN.
If you hear S!RENEN on your mobile phone, you should follow the instructions immediately: STOP. READ. REACT.
The mobile-based public warning system adds to Denmark’s existing public warning systems. It is a supplement intended to future-proof our ability to warn the public. S!RENEN is implemented in accordance with an EU directive.
How do you get a warning on your mobile?
If you are in an area where a lot of people are in a major crisis, S!RENEN can be activated.
It is the police who issues the warning, and the warnings will be transmitted to the telephone masts located in the danger zone.
The telephone masts automatically forward the warning to nearby mobile phones - safely and 100% anonymously. All newer mobile phones can receive S!RENEN, and you do not have to register anything nor use a special app.
If S!RENEN goes off on your mobile, stop what you are doing and read the information on the screen.
Once you have read the information, you must act as described and keep yourself informed.
We've summarized it all in three simple steps you must follow:
Behind the system
How does S!RENEN work?
S!RENEN is based on a technology called cell broadcast. This means that a signal can be transmitted via telephone masts to specific areas without requiring an internet connection. The signal is one-way only, so the authorities do not receive data about recipients’ mobile phones and location.
It means that you can get alerts from the authorities directly on your mobile phone if you are located in an area where many people are exposed to immediate danger.
What is S!RENEN?
S!RENEN is Denmark’s mobile-based public warning system. It means that you can now receive a warning directly on your mobile phone if you are located in an area where many people are exposed to acute danger.
How severe must a crisis be before S!RENEN is used?
A warning is broadcast via S!RENEN in life threatening emergencies affecting a large number of people. The criteria that must be met are the same as when the police broadcast emergency notifications and activate the physical warning sirens.
How does S!RENEN work?
S!RENEN is based on a technology called cell broadcast. This means that the authorities can send a warning directly to mobile phones located in an area where many people are exposed to acute danger. S!RENEN will tell you how to proceed. You don’t have to do anything yourself to receive the signal.
Why has S!RENEN been implemented?
S!RENEN has been implemented due to an EU directive from 2018. The directive requires all EU member states, including Denmark, to deploy a mobile-based public warning system. Mobile-based warning is intended to ensure that warnings are as accessible as possible to the public, so we can respond more easily and quickly to major crises or disasters.
EU directive concerning mobile-based warning
Why do I need to get alerts on my mobile?
You will be warned more quickly and better with alerts on the phone in emergency situations near you.
S!RENEN is being implemented in Denmark because the EU in 2018 adopted a directive telling member states that all citizens in the EU should be able to receive warnings by phone in case of crisis or disaster. Similar, but nor identical, systems are being implemented throughout the EU.