If you have a SentinelX detected while you're using the COIN App, you can earn 12x the rewards!
Simply tap the XY button on this device to wake it up. You will hear a tone indicating the battery has life. Your COIN app should detect its presence with a Sentinel icon on your display.
You only need one SentinelX nearby to earn 12X the rewards. Having more than one SentinelX won't multiply the rewards. The COIN App will only connect to one SentinelX at a time!
Keep this in mind when using features such as Sentinel Sharing. You can learn more about Sentinel Sharing here: What is Sentinel Sharing?