Neat. I wired the flashlight to a long press of the Bixby button on my S10+.

I probably would have settled for a button, but the gesture is so nice. (There's also a "twist" gesture to activate the camera. It's also nice. I haven't ever gotten false positives with the gestures and they have become second nature. I never used any gestures before having a Moto phone and always thought accelerometer-based input was gimmicky and unreliable based on my experience with prior phones.)