This is interesting:
Scientists Send Messages Directly From One Brain To Another
The emitter translates the message she wants to send into an obscure five-bit binary system called Bacon's cipher, which is more compact than the binary code that computers use.
The emitter now has to enter that binary string into the laptop using her thoughts. She does this by using her thoughts to move the white circle on-screen to different corners of the screen. (Upper right corner for “1,” bottom right corner for “0.”) This part of the process takes advantage of technology that several labs have developed, to allow people with paralysis to control computer cursors or robot arms.
Is Bacon’s Cipher more compact than Morse Code? It’s an interesting way of converting letters to binary, if anyone is interested in a system like that.