diff --git a/libs/lua-geolocate/Makefile b/libs/lua-geolocate/Makefile
new file mode 100644
index 0000000..4bd58ab
--- /dev/null
+++ b/libs/lua-geolocate/Makefile
@@ -0,0 +1,23 @@
+include $(TOPDIR)/rules.mk
+
+PKG_NAME:=lua-geolocate
+PKG_VERSION:=1
+
+include $(INCLUDE_DIR)/package.mk
+
+define Package/lua-geolocate
+	SECTION:=libs
+	CATEGORY:=Libraries
+	TITLE:=WLAN-based geolocation librari based on openwifi.su
+	DEPENDS:=+libubus-lua +libiwinfo-lua +lua-jsonc
+endef
+
+define Build/Compile
+endef
+
+define Package/lua-geolocate/install
+	$(INSTALL_DIR) $(1)/usr/lib/lua
+	$(INSTALL_DATA) src/geolocate.lua $(1)/usr/lib/lua/
+endef
+
+$(eval $(call BuildPackage,lua-geolocate))
diff --git a/libs/lua-geolocate/src/geolocate.lua b/libs/lua-geolocate/src/geolocate.lua
new file mode 100644
index 0000000..b6f2968
--- /dev/null
+++ b/libs/lua-geolocate/src/geolocate.lua
@@ -0,0 +1,87 @@
+local iwinfo = require 'iwinfo'
+local json = require 'jsonc'
+local ubus = require 'ubus'
+
+
+local function canon_bssid(bssid)
+	return bssid:upper():gsub(':', '')
+end
+
+-- Iterates over all active WLAN interfaces
+-- Returning true from the callback function will skip all remaining
+-- interfaces of the same radio
+local function foreach_radio(f)
+	local uconn = assert(ubus.connect(), 'failed to connect to ubus')
+	local status = uconn:call('network.wireless', 'status', {})
+	ubus.close(uconn)
+
+	for name, radio in pairs(status) do
+		for _, iface in ipairs(radio.interfaces) do
+			if f(iface.ifname) then
+				break
+			end
+		end
+	end
+end
+
+local function receive_json(request)
+	local f = assert(io.popen(string.format("exec wget -T 15 -q -O- '%s'", request)), 'failed to run wget')
+	local data = f:read('*a')
+	f:close()
+
+	return json.parse(data)
+end
+
+local function locate(blacklist)
+	local done_bssids = {}
+	for _, bssid in ipairs(blacklist or {}) do
+		done_bssids[canon_bssid(bssid)] = true
+	end
+
+	local found_bssids = {}
+
+	foreach_radio(function(ifname)
+		local iw = iwinfo[iwinfo.type(ifname)]
+		if not iw then
+			-- Skip other ifaces of this radio, as they
+			-- will have the same type
+			return true
+		end
+
+		local scanlist = iw.scanlist(ifname)
+		if not scanlist then
+			return false
+		end
+
+		for _, entry in ipairs(scanlist) do
+			local bssid = canon_bssid(entry.bssid)
+			if not done_bssids[bssid] then
+				table.insert(found_bssids, bssid)
+				done_bssids[bssid] = true
+			end
+		end
+
+		return true
+	end)
+
+	assert(#found_bssids >= 12, 'insufficient BSSIDs found')
+
+	local data = receive_json('http://openwifi.su/api/v1/bssids/' .. table.concat(found_bssids, ','))
+	assert(type(data) == 'table' and data.lon and data.lat, 'location not available')
+
+	return data
+end
+
+
+local geolocate = {}
+
+function geolocate.locate(blacklist)
+	ok, result = pcall(locate, blacklist)
+	if ok then
+		return result
+	else
+		return nil, result
+	end
+end
+
+return geolocate