Neon signs are being replaced by self-renewing biological lights. Hermès x Ginkgo Bioworks’ "Algae-Light Signage" at Milan Design Week 2025 features genetically modified dinoflagellates in glass tubes: these microbes photosynthesize by day, emitting brand-specific teal light (480nm wavelength) at night. Intensity correlates with CO₂ levels, transforming storefronts into air quality indicators.

Interactivity achieves deeper breakthroughs. Shiseido’s Tokyo "Moss Wall" embedded with photosensitive fungi responds to human breath (<0.5m proximity): exhaled humidity triggers mycoelectrical signals that reveal Ukiyo-e-style product patterns. Wired reports this living signage holds viewer attention 3.2x longer than LEDs, with 100% biodegradability.

Core technology relies on organic-digital hybrid systems: ETH Zurich’s "bio-batteries" harvest electricity from plant photosynthesis for sensors; Cambridge’s "protein encoding protocol" enables microbial expression of brand patterns. When LVMH’s Bordeaux winery uses glowing yeast colonies to project logos (brightness intensifying with alcohol concentration), advertising media completes its transition from industrial objects to symbiotic lifeforms. L’Oréal’s sustainability data shows bioluminescent branding boosts eco-friendly perception by 67%.