I don't know if you could have an EMP device focused enough to fry a camera without wrecking all the smartphones in the area. Maybe a powerful laser could be us

I don't know if you could have an EMP device focused enough to fry a camera without wrecking all the smartphones in the area. Maybe a powerful laser could be used to blind the sensor instead? Seems more practical to me. I wouldn't advise trying any of that though, I doubt you'll achieve much and in the current climate I wouldn't be surprised if you ended up with terrorism charges or something.