I've been fascinated by this topic since a couple decades ago, when I participated in a research study involving EEG and word recognition. Progress seems to be

I've been fascinated by this topic since a couple decades ago, when I participated in a research study involving EEG and word recognition. Progress seems to be slow but steady, with applications getting more accurate and practical. Your point about invasive implants being impractical for commercial use made me wonder.. I searched the first phrase that popped into my head, "Non-invasive Brain-Computer Interface". Looks like there's promising research on significantly improving sensitivity/resolution of EEG singals. - First Ever Non-invasive Brain-Computer Interface Developed - https://www.technologynetworks.com/informatics/news/first-ever-non-invasive-brain-computer-interface-developed-320941 https://www.technologynetworks.com/informatics/news/first-ev... (2019) - Noninvasive neuroimaging enhances continuous neural tracking for robotic device control - https://robotics.sciencemag.org/content/4/31/eaaw6844 https://robotics.sciencemag.org/content/4/31/eaaw6844 Still, your prediction of "likely decades" sounds realistic. I'm hoping for an affordable, non-invasive brain-computer interface to be as widely used as the keyboard, mouse, or microphone.