Just a fantasy concept but:

So, I was thinking, that if one were to combine an audio phase cancellation device with a live resampling convoltion reverb that used an accurate live GPS or some other sort of tracking technology to define how sound moves through space in specific relation to one single person's way of hearing the world around them, not only would it make understanding language completely impossible, but it would also make telepathy fully possible, especially if it was also used in combination with a device that could read human brain waves and make an accurate live map of the human genome in order to create an accurate live reading of someone's biochemical interaction with the world around them. It would work especially well if the phase cancellation device was also able to use live resampled recordings to do live phase cancellation while also specifying a target object to create the sonic confusion and censorship necessary to make this device a functional