Firechat working on bluetooth-based Greenstones, hardware widgets to strengthen mesh networks on mobile
Russell Brandom / The Verge :
Context & Ripple Effects
Open Garden doubled down on its off-grid FireChat messenger with a $10.8M Series A, and Greenstones are the next step: instead of relying on phones to relay each other's messages, the company wants dedicated Bluetooth widgets that thicken the mesh where handset density is thin.
The move puts Firechat into hardware territory just ahead of two developments in the coverage that frame it: the Bluetooth SIG promising mesh support in the 2016 stack, and rival GoTenna raising $24M for its own long-range radio pucks.
First-order effects
- FireChat users in sparse crowds gain relay nodes that don't depend on other people's phones being present and awake, directly attacking the coverage hole that limits software-only mesh apps.
- GoTenna, which has bet its $24M war chest on exactly this phone-plus-radio model, now faces a competitor shipping hardware attached to a consumer messenger brand.
Second-order effects
- If Greenstones prove demand for plug-in relay nodes, the Bluetooth SIG's mesh push — culminating in the formal Bluetooth Mesh specification released in 2017 — makes the same capability a standards feature, commoditizing the widget layer and forcing both Firechat and GoTenna to compete on software and network services instead.
- Hardware shifts Firechat's economics from app distribution to manufacturing and inventory, pressuring it to justify the added cost per user against an app that was free to spread.
Third-order effects
- Off-grid messaging keeps resurfacing across the decade's coverage — from Firechat's funding to Dorsey's 2025 Bitchat experiment — suggesting infrastructure-independent communication is becoming a standing product category rather than a crisis novelty.
- As Bluetooth absorbs mesh into the baseband standard, the durable layer of value migrates up: whoever owns identity, routing policy, and community networks captures the margin that pure radio hardware once would have.
The trend: Mobile mesh networking is evolving from app-layer workarounds toward a split between standardized Bluetooth mesh built into every handset and specialized hardware for coverage gaps — and Greenstones are Firechat's bid to own that hardware edge before the standard catches up.