If you've got an iPhone or iPad, you're already aware that the Home button is by far the most used physical button since you use it to exit apps, multitask, and more. Depending on how fast you tap the Home button, double and trip clicks may not always register for you or get misread. iOS actually gives you a way to customize the Home button click speed by slowing it down.
Since iOS will always register fast taps, the only settings offered are to slow it down. If you find that your iPhone is registering double taps as two single taps, slowing the speed down a bit could prevent this issue from happening.