Blue Oak creates a privacy-focused, non-wearable, smart-home system that senses and analyzes vibration data from the floor without the need to remodel flooring with any special material. Our system can detect when an elderly falls and send out alarm so that help comes as soon as possible. Our system can also be a crucial part of preventive care system by sensing and analyzing footstep data so that we detect when an elderly starts having changes in gait pattern or mobility, which could indicate an onset of certain pathologies.