It's sometimes difficult to take the tablet away immediately. A typical scenario is that my girlfriend and I are in the front seat of the car while the Small Child sits in a booster seat in the back and wants to use the tablet; she'll fight to keep it and it's hard to reach around the chair to take it out of her hand. Also there's the fact that the Small Child consistently breaks promises - she'll agree not to make it loud to get the tablet back, but immediately turn up the volume anyway when I give it to her. A technical solution is easier than playing dog trainer to a child with a developmental disability...