Christoph Baumeister built three startups spanning healthcare, smart home tech, and delivery logistics, and holds a PhD in consumer behavior from TU Munich, after co-founding and leading product at Avi Medical and building keyless access systems at LOCUMI LABS/nello that focused on the "first door" of apartment buildings as the real bottleneck in delivery. His work traces a consistent thread from studying access versus ownership in his academic research to actually building access-focused products, giving him a rare mix of research background and hands-on product and go-to-market experience.