Create static/bluetooth.js

static/bluetooth.js

@@ -0,0 +1,20 @@
+// デモ用：ビーコン名に "StoreBeacon" を含むデバイスに接続し、
+// GATT Characteristic (UUIDサンプル: 0000beac-0000-1000-8000-00805f9b34fb) から venueSlug を取得する想定
+
+async function connectBeacon(){
+  try{
+    const device = await navigator.bluetooth.requestDevice({
+      filters: [{ namePrefix: 'StoreBeacon' }],
+      optionalServices: ['0000beac-0000-1000-8000-00805f9b34fb']
+    });
+    const server = await device.gatt.connect();
+    const service = await server.getPrimaryService('0000beac-0000-1000-8000-00805f9b34fb');
+    const ch = await service.getCharacteristic('0000bead-0000-1000-8000-00805f9b34fb');
+    const value = await ch.readValue();
+    const decoder = new TextDecoder('utf-8');
+    const slug = decoder.decode(value.buffer);
+    alert('ビーコン検出: ' + slug + '\n（実際のチェックインは店舗QRを推奨）');
+  }catch(e){ alert('Bluetoothエラー: ' + e.message); }
+}
+
+document.getElementById('beacon').onclick = () => connectBeacon();