Presently I am doing my work in the android field. I am trying to develop an application to send a message from my bluetooth/wi-fi enabled mobile to other bluetooth/wi-fi enabled mobiles without pairing.
Is it possible to send message to another mobile in my blueooth or wi-fi range without pairing? If it possible how can I send the message to another mobile with out pairing?
If your talking about SMS this does not apply.
For Wifi have a look at this project http://code.google.com/p/remotedroid/.
For Bluetooth this thread explains how to archive what your looking for. http://developer.android.com/guide/topics/wireless/bluetooth.html
To send data over to Bluetooth device all you need is the Mac address of that device. Read the Bluetooth tutorial, its very helpful.
For sending Message (SMS,MMS), I don't think so, Without pairing how could you know the device Id, to which you want to send a message, And if you don't pair the devices then how they communicated to each other,
EDIT: For bluetooth As per my knowledge it's impossible to send or receive data over RFCOMM sockets without pairing.
And for WiFi , setup parallel server/client threads on each device, and send whatever you want. To discover services on a local network you can optionally use zeroconf.
Look at these links,
Bluetooth pairing without user confirmation
Bluetooth SPP between Android and other device, UUID and PIN questions
How to send and receive data in Android Programming using bluetooth without pairing?
Shortly and sweetly, No.. You cant send messages to other mobiles without some kind of authentication.
