"Wi-Fi Direct" enables 2 devices to write into the 1 whiteboard.

The communication available speed of Wifi Direct is faster than the communication available speed of Bluetooth. Similarly the distance is wider.
Therefore, this app provide a Whiteboard capable of almost simultaneously writing and reading the written data.

Either phone or tablet can be used that your device is Wi-Fi Direct-compliant terminal.

/// Simple setup
(1) Wi-Fi ON
(2) Search a peer
(3) Choose ( A or B )
(4) Connect
(5) Start White board

When you close app, Wifi Direct connection is disconnected.