u/DarkHorseReborn

I'm a sadistic dom and my partner is a masochist sub. We like exploring and experimenting with different ways to hurt him that he'll like. He wants a shock collar and I wanna get him one, preferably app controlled since we're usually away from one another. Are there any good human shock collars that are app controlled? I'm not sure if an actual animal/dog shock collar would work, or if it'd be too dangerous. Any advice or info is greatly appreciated.