Philip O'Keefe, one of Synchron's patients in the SWITCH clinical trial, using his BCI. Philip O'Keefe, one of Synchron's patients in the SWITCH clinical trial, was the first person in the world to tweet using a BCI device. About 20 months earlier, O'Keefe was implanted with Synchron's BCI. Synchron's technology has caught the attention of its competitors. Source: SynchronIn January, the medical journal JAMA Neurology published the peer-reviewed, long-term safety results from a trial of Synchron's BCI system in Australia.