M2D Car Receiver

It shows Speed, Elevation and Hour and notifications as well.

Installation

Once installed and configured M2D Notifications Sender on your main phone (which usually use), this forward notifications to your (max 3) secondary devices so you can read them while away from your main phone (if they have internet access) and in many cases will leave you answer them.

In your Car Device you must install this App and once configured, you can receive notifications.
 

Configuration

For devices can look them eatch others, you need to enter in the App M2D Sender the Receivers codes. This code is shown on the display settings of the M2D Receiver App once it is installed on your secondary device.

In the Receiver M2D App you must enter the IMEI of the main device. This imei is shown on screen settings of the M2D Sender App once installed in your primary device.
 

There are other security parameters to avoid that anyone can send messages to your device.

On the M2D Sender App you must enter your own key and in the M2D Receiver App the same key that must match since otherwise the messages will be discarded. This key allows the Sender to send messages and that the Receivers will accept. By default Apps already have this code included, but you better change them.

On the M2D Receivers Apps you must enter your own key and in the M2D Sender App the same key that must match since otherwise the messages will be discarded. This key allows the Sender to send messages and that the Receiver will accept. By default Apps already have this code included, but you better change them.

Additionally, messages are encrypted so that only the recipient can read them. For this an encryption key is used in the settings. By default Apps already have this codebook including, but you better change them.

How does it works

- Notifications are encrypted and send with the key configured on the server Apps.

- The server checks the sender and receiver data to see if they are registered and if so sends the message to Google using GCM (What's this?)

- When the Receivers have internet, Google shall forward the notification to Receivers

- The receivers decrypt the message and check that the keys to Sender and Receiver match

- The receivers displays a notification to the user

What Can Go Wrong

This program is in Beta and further development of faults that can happen:

- The server that sends notifications is down.

- Google GCM Service stops working

Privacy

The server never stores the message that it receives, it only makes like a proxy for shipment and is very light.

Further messages are encrypted with the encryption key (change those default)