Your Personal Shadow in the Sun
A solar-powered beacon network for beaches and outdoor venues that livestreams real-time shadow maps and cumulative UV exposure. Walk the path of maximum shade, minimum UV damage.
A family arrives at the beach and sees their avatars on a screen overlaid with a glowing green path — their personal shadow route for the next 3 hours. As they walk, the path updates in real-time, shifting around them like a living shadow. When they step into a 'hot zone,' misting vents activate automatically, and their phones pulse: "15 minutes until sunscreen reapplication needed." They feel guided, protected, and completely cared for without thinking about it.
Per location with lighthouse hardware + $99/month per additional beacon
Commission from sunscreen dispensing partnerships
Premium: personalized UV tracking + shadow routing (Free basic tier)