Once you've acquired a few Particle devices it can be hard to know which one you are trying to program at any given moment. Especially if you don't give each device a descriptive name when you claim it. If only there was a way from the Particle Build IDE to verify which device was on your desk. Turns out there is! It's called signaling and it's available in the online IDE as well as the command line. In this episode of DailyIoT I show you how to trigger the rainbow party on your device.