For the data transfer from the brain to other digital devices. Neuralink has already...

For the data transfer from the brain to other digital devices. Neuralink has already done it and productinized it: https://neuralink.com/blog/a-year-of-telepathy/ But transferring data from digital devices to the brain is still super challenging. There are some research papers about it already but nobody has productionized it yet as far as I know.