If I line in a small apartment block and I have a Bluetooth enabled T.V. and I buy and DVD that is Bluetooth enabled will either of these products conflict with any Bluetooth enabled devices that are in other apartments that are within the range of the equipment? I'm trying to put together a report on wireless technologies and as far as I have read it seems that Bluetooth devices automatically recognize each other but I don't understand how they differentiate. Ok that just sounds so dumb because it must be obvious but I really do not know why. Thanks for any help.

Ok I have looked a bit more and I still have the same query. Bluetooth uses spread spectrum frequency hopping which I understand but where I'm confused is; Bluetooth seeks out other devices and strikes up a conversation with them to see if they need to communicate or not. Ok I get that bit but if the guy next door has the same DVD player as me how does Bluetooth differentiate? I mean if an infra red remote control is directed at two t.v.'s side by side then the channels will changed on both of them.

Well, there are 2 answers. First a device has to be in "discoverable" mode to be found by other devices. Some things taht only send data (liek a dvd player) may only operate in "non-discoverable" mode. And most can be toggeld on or off. Basiclly, if you scan for bluetooth devices with another bluetoooth device it will only se ones that are discoverable. The second part is the unigie id of each device. Even though you have the exact same dvd palyer, each has it's own id. Sort of like a serial number. And each can have it's own name set by the user. So let's say yo uscan for bluetooth devices you will see both your neighbors bluetooth and your bluetooth dvd player(assuming they are discoverable). But you can tell the difference by a) the serial # of each and b) the strength of the signle to each. Once you figure out which one is your's you can name it, say "goosh's dvd". Then when ever you scan for bluetooth devices you will see your neighbors and "goosh's dvd". Finally, when two devices connect they both have to enter a special pin code, and optionally a password. That means you can password protect your dvd player from and one else who might want to try and use it.

Hi Ryan I'm sorry I didn't get back to you sooner but I've been busy. You probably won't see this now lol but thanks for the informative answer :-)