[zo1]

They use 250 ECG electrodes as input. I think that means it's above the skin, so not invasive.

[resiros]

You are mistaken. They use ECoG which is intracranial electroencephalography. These are electrodes placed on exposed surface of the brain. https://en.wikipedia.org/wiki/Electrocorticography

[zo1]

Thanks for the info!

[raidicy]

I dearly hope this is the case. Even if it were expensive to rig up, being able to not use my hands for computer work would really help( I have RSI).