Stop. Read. React.
Denmark's mobile-based warning system is now being launched. Watch the video or explore the site to learn more about what this means for you.
New mobile-based public warning system
What is S!RENEN?
S!RENEN is Denmark’s mobile-based public warning system. The technology allows the authorities to transmit a warning 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 other text messages and push notifications.
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 will be implemented in 2023 because Denmark, as a member of the EU, must introduce a mobile-based public warning system.
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 warnings from the authorities directly on your mobile phone if you are located in an area where many people are exposed to acute danger.
ABOUT S!RENEN
Q&A
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 will be used?
An alert is broadcast through S!RENEN in acute, life-threatening situations 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 alert 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 warnings on my mobile?
You will be warned more quickly and better with warning on the phone, if a crisis happens near you.
S!RENEN is being implemented in Denmark because EU in 2018 adopted a directive telling member states that all citizens in EU should be able to receive warnings by phone in case of crisis or catastrophy. Similar, but nor identical, systems are being implemented all over EU.