Tangled up in Bluetooth

Last week we discussed the possibility of a Bluetooth pencil to put behind your ear. That is so you do not look like an idiot while shouting into your mobile phone and instead look like a useful member of society, albeit one who walks around talking to themselves with a pencil behind their ear.
Stephen Williams at Alizian thinks that we are missing a trick when it comes to Bluetooth disguises.
‘How about manufacturers designing something that can be built into spectacle frames?’ he asks, though he does accept that they would have to be a heavily masculine variety of the sort popularised by Brains from Thunderbirds.
If you are looking for something a little more feminine, he also suggests Bluetooth earrings. Surely he is not the first person to have this idea?