We've done some researchs on how to build connection between devices. Web database is one of the choice. In our current projects, we choose Firebase. Firebase saves us a lot of time on coding server end code. So we focus more on the front end coding.

Prototype

Here is demo with Firebase.

Desktop

link

wall.html

usage

1) Please use Chrome to open this prototype.

2) Wait for the loading and open the mobile protoype when you see the following screen.

Mobile

link

phone.html

usage

1) Use Chrome mobile simulator to view the prototype. You can also install the prototype as web app on your iPhone.

2) Click 'All Boards' to the selection page.

3) Select one board.

4) When you do step 2 and step 3, the desktop prototype will do the same thing automatically.