If you have a PC, a PDA or a cellphone capable of using Java applications then Bluetooth Instant Messenger Valhallachat allows you to create a chat room on the device using the program and talk to other users who are also using this special chat client.
Enter your nickname and language. Create the chat room or join one. If you want, the communication in the room can be encrypted so that nobody can intercept the messages.
Bluetooth Instant Messenger Valhallachat requires Java RunTime Environment.