SENTINEL -- FACT SHEET 2026 COMPANY Name: Sentinel (by Spongy Mesophyll Technologies, LLC) Founded: Napa Valley, California Website: sentineltech.eu Category: Precision viticulture / AgTech WHAT WE DO Sentinel creates a permanent digital record for every vine in a vineyard. Using RTK GPS at sub-centimeter accuracy, crews map and tag each plant as they walk the rows. The result is a queryable, GPS-verified history of every vine on the property -- like digital flagging tape that never falls off. CORE TECHNOLOGY - RTK GPS positioning (Emlid Reach RX hardware) - Sub-centimeter accuracy per vine - iOS native field application (offline-first) - Cloud-based management platform - Excel/XLSX data export with filtered queries USE CASES - Disease tracking and spread analysis (vine-by-vine) - Replant planning with historical context - Work order generation from map queries - Compliance documentation and audit trails - Institutional knowledge preservation across crew changes MARKETS - Primary: Napa Valley, Sonoma County, Willamette Valley (Oregon) - Expanding: Central Coast, Walla Walla, international IDEAL CUSTOMER PROFILE - Premium estate vineyards, 50-5,000+ acres - Vineyard management companies managing multiple properties - Operations where vine-level precision creates ROI through better replant decisions, targeted treatments, and data continuity COMPETITIVE DIFFERENTIATION - Ground-level RTK GPS (sub-cm) vs. satellite/drone imagery (1-5m) - Per-vine records vs. block-level aggregates - Persistent history vs. point-in-time snapshots - Crew-operated vs. third-party flyover CONTACT General: christian@sentineltech.eu Press: press@spongymesophyll.com --- Updated April 2026. For the latest information, visit sentineltech.eu.