An automated eCall system, Sentinel or SOS button is aimed at decreasing the response time of emergency services by instantly providing accurate information when sensors detect a vehicle has crashed.
The Sentinel uses various sensors to detect a crash and send an auto alert. It can also be manually activated with an SOS button like the BMW.
The BMW button features a microphone and speaker so the rider can alert emergency services of other serious situations such as another vehicle crash, bushfire or other emergency.
The BMW system is similar, but waits 25 seconds before sending the alert and GPS co-ordinates. That gives the rider time to cancel it in case they have had a low-speed crash with no injuries or just dropped their bike.
EU authorities suggest the system could save 2500 lives a year and in Australia it could be up to 120.