Nudge is developing a non-invasive brain interface based on phased-array ultrasound technology. Unlike invasive implants, Nudge's wearable device delivers focused neuromodulation to deep brain targets to treat conditions such as chronic pain, anxiety, and addiction. The technology offers high spatial precision, aiming to make neurostimulation a safe, accessible consumer health solution. The approach compresses traditional R&D timelines, offering systemic cost reductions in therapeutic development and biological engineering.