[kuhnmi]

Hi,

Is it possible to write a J2ME application that periodically searches for other Bluetooth devices in its proximity and alerts (ringtone, vibra, alert message) the user if such a device is found? This application should run in the background, such that the user can start it once, switch to normal phone mode and only see something of the application again once a Bluetooth device (with the appropriate service) is discovered.

I guess there might be differences between different devices/platforms. Is it, for example, enough to just start the Java application on a Series-60 device and then switch to normal phone mode (without quitting the application). Or would this prevent the application from issuing alerts?

Thanks for any information about the topic,

Michael

[nicenouman]

"I guess there might be differences between different devices/platforms. Is it, for example, enough to just start the Java application on a Series-60 device and then switch to normal phone mode (without quitting the application). Or would this prevent the application from issuing alerts?"

i dont think it will prevent the user from issuing alert however it will give focus back to the application when the alert is displayed.
it wont be possible to run application in the background in S40 Mobiles though

[traud]

This is not the way Bluetooth was designed. Can we switch the roles in your model?

Let us assume you have your own Bluetooth service like the Nokia Sensor application. The phone advertises this as service and when another user wants to start a chat, the phone wakes up again and alerts the previous user.

What is different in this model: There is no automatic Bluetooth searching except when one human wants so right now. Then all other wake up and participate. This can be done through Bluetooth Push Registry.

Your concept is a energy and may be even a usability no-no.

[kuhnmi]

Energy is actually not an issue in my case, it's just for an experiment for which we want to buy hardware (i.e. mobile phones). I am aware that Bluetooth is not the best technology for such things (since an inquiry is very slow and expensive in terms of energy).

So the question really is, what mobile phones allow the following:
- Run a process in background that periodically does BT inquiries
- Issue an alert upon the successful completion of a computation involving the two devices (the one that searches and the one that was discovered). Both devices should be able to issue this alert.

Thanks for any hints,

Michael