> most BT devices can only link to one other device at a time (which can > be very irritating). Plus they will need batteries. So my concern is > that if you have the keyboard enabled, you can't use Clicker or Address > book (you already can't use both of thenm at once) The specific device usually is the limiting factor. There is no reason that BT can not link to several devices at once, but most phones are not set up to do that. Nothing un the BT spec limits it to one device at a time.