Just to comment on my OP (and OK, Dave, the thread may be better in BS, no argument from me either way). I've found the wi-fi ID question can be resolved with my Draytek AP903 AP. I don't suppose there are many devices with a similar facility (and have not found similar on my earlier 900 model), but with this one, you can use its "object settings". OK, you still have to work out what the device is to start off with but from there, you can associate a more user friendly name for a mac address (eg. “a qoe-ioboard” to "LG Washer") to show up in subsequent station lists.