Contains the documentation and wiki of the oso project.
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OSO Documentation

Contains the documentation and wiki of the oso project. Every repository in the organization will link to oso-docs as it contains the and the

Supported devices

The currently supported devices are listed below

We aim to incorporate more devices as the development goes further. If you have an idea on which device we should look into next, just write us. If the requested device fits, we try to get our hands on it so we can make it work with the backend.


Every device has its own way to send data, it may use TCP with its own protocol or HTTP. It may be that several configuration steps have to be done before a device can communicate with this backend.

Smartphone (Android/iOS)

We provide an app written in React Native so you are able to send emergencies with your Smartphone.

Flic Button

The Flic Button works in conjunction with the Smartphone over Bluetooth.

We provide a seamless integration of the Flic Button in our Smartphone app. Thus the same app can be used.
By clicking on the Button for instance an emergency is automatically sent to the backend.

For more information about the Flic Button visit

ReachFar Tracker RF-V18

To be able to use the Reachfar Tracker it needs a sim card to make and receive phone calls. Mobile data needs to be enabled in order to send out emergencies.

Afterwards the Tracker only needs to know how to connect to our server. This will be done via SMS-configuration.
All configration-SMS have the format ,,...#. It is mandatory to use only lower-case letters and to not add any whitespace or other character whatsoever. A message is only valid, if the Tracker sends a confirmation-SMS back. This can take up to 5 Minutes. If no confirmation is received the SMS was invalid and ignored.

First a master needs to be assigned via the message

where the <password> is the devices password (by default '123456')
and the number from which the message has been sent will be configured to be the master number. This is the only message that can be sent by any number - all further configurations need to be sent by this master number.

Afterwards the server will be announced to the Tracker via

where <url> is the url to the server
and <port> is the port to connect to

The protocol for configuring a Reachfar Tracker with our provided Server/System would be

--> Tracker: 123456,sos1#
<-- Tracker: <number> has been set for master number successfully.
--> Tracker: surl,,port,9999#
<-- Tracker:;port:9999.;OK!

For more information about the ReachFar Tracker or the SMS-configuration visit


Documentation is following soon.

For more information about the NanoTracker visit


We are trying to build a platform where people in need have a tool to communicate effortlessly about needing help. We encourage people to work with us so we can provide the best possible experience. There is a lot more to come in the future. To name a few examples

  • Host service which can be used by everyone
  • Support more devices
  • Add quick responses for help-providers