With Back Tap in iOS 14 or later, a quick double- or triple-tap on the back of your iPhone can open Control Centre, take a screenshot, trigger accessibility-specific actions and more.
You can double-tap or triple-tap the back of iPhone to perform actions such as taking a screenshot, turning on an accessibility feature, running a shortcut, and more. Go to Settings > Accessibility > Touch > Back Tap. Choose Double Tap or Triple Tap, then choose an action.
One such feature is VoiceOver, which provides an audio description of items on the iPhone screen. However, there's one small catch with enabling VoiceOver: once it's on, a double-tap replaces the single tap for interacting with your phone. Therefore, to re-enable single tap usage, disable VoiceOver.
Back Tap lets you tap the back of your iPhone to perform an action. The intended use case is to turn on another accessibility feature, such as VoiceOver, or to perform an action on a hardware Switch Control. But the feature is highly versatile.
According to a U.S. Army training manual, "There is a natural arc of the front sight post after the round is fired and the recoil kicks in. The soldier lets the barrel go with this arc and immediately brings the front sight post back on target and takes a second shot. The soldier does not fight the recoil.
The most google thread here (now closed) suggests back tap will work with “any case as long as it's set up properly”.
Make your screen easier to use with one hand
Once the feature is enabled, all you need to do is lightly double-tap the home button (don't click it down). The top half of the screen will drop down to the bottom half, making it easier to navigate with one hand.
It is hidden within the Accessibility settings of your iPhone and it is switched off by default. If you turn it on, you can choose a number of options to happen when you double tap or triple tap the logo on the back of your iPhone. The standard options available for both double tap and triple tap are: None.
If the user hears a strange crackle, noise, echo, and other strange sounds that were not there before, this may indicate that a wiretap has been put on the phone.
With Back Tap in iOS 14 or later, a quick double or triple tap on the back of your iPhone can open Control Center, take a screenshot, trigger accessibility-specific actions, and more.
Back Tap works well even if you have a case on your iPhone. However, some extra rugged cases may hinder this function.
First, remove the broken tap by gripping the ferrules with a fork wrench or adjustable wrench and turning counter clockwise. Once you've finished unscrewing, the tap can be removed. If the tap is tricky to remove, you can use WD-40 Specialist Fast Release Penetrant on it to ease the unscrewing process.
For best results, it's good to use the Back Tap feature when the iPhone is "awake" or illuminated. It should still work from the Lock Screen in those cases.
Double Tap increases the rate of fire (and effectively increasing recoil by the same amount, due to the weapons having less time to settle between shots) of all weapons by 33% and doubles bullet damage (2.0 version only).
Double-tap, or the "like" feature, was invented as a way for users to indicate that they like or appreciate a post or comment. It is a simple and easy way for users to engage with and show support for the content or the person who posted it.
Are you referring to double taps to the back of the head of an injured enemy combatant? That is considered to be a war crime and in violation of the Geneva Convention.
Double-Tap to Lock and Unlock Android
Within the motions and gestures section, you will be able to find a number of handy settings, including double-tap to turn on and off your screen. This feature can also be used to lock your phone—double-tap to lock, double-tap to unlock.
Turn on Lost Mode or lock a device
In Find Devices on iCloud.com, click All Devices, then select the device you want to put into Lost Mode or lock.