Sony HT-XT1 Startup Manual page 13

When using one-touch connection (NFC)
Illumination LED (blue)
1 Download, install, and start the "NFC Easy Connect" app on your smartphone.
2 Touch the N mark of this system with the smartphone.
3 Make sure that the illumination LED (blue) lights up. (Connection has been established.)
• Compatible devices
Smartphones, tablets, and music players with the NFC function built-in
(OS: Android™ 2.3.3 or later, excluding Android 3.x)
13