Where is the Notion data stored? Rossi February 06, 2017 23:54 Updated Follow The data is encrypted and stored securely in the Notion cloud where all of our sensor data is held. Related articles Is Notion a security system? Is Notion constantly recording the sound in my room? I am concerned about privacy. Will my home data leave my local network? Do sensors work outdoors? Do Notion sensors detect motion? Comments 0 comments Article is closed for comments.