What's the state of communication thru vibration?

Question

I was recently watching two wasps communicate with vibrations. These are inch sized black wasps that inspect holes. One of the wasps was half way inside a hole while the other wasp was flying at 5 inches behind looking directly at the first one. The flying wasp emitted quick buzzing sounds that I could hear across the garage. It seemed to use a kind of Morse code.This made me curious about what mechanism the wasps could use to generate these sounds. Since I'm building a wearable computer, I'm looking for skin/bone communication methods. Wondering whether high freq vibrations could be used for this, and how low power and miniaturized it can be.

not_your_vase · Accepted Answer

Bone-conducting headphones have been on the market since a while - the tech is mature is enough not to be expensive, and the sound quality is also okay, if you disregard the lack of bass (according to others' reviews). They pretty much work by resonating very quick on your temple.

h2odragon · Answer

think they do a cricket-ish thing rubbing wings together. they're using the hole as a horn bell for focus and tone. i think (i watch carpenter bees).ultrasound for body range communication will probably be subject to much interference and attenuation; i think radio will be easier.