How to Send a Tap from Your Apple Watch
One unique way to use Digital Touch on Apple Watch is to send a tap to someone. As with the other Digital Touch features, that person needs to have an Apple Watch too. A tap is similar to a tactile version of a Facebook “poke” — a kind of “Hey, I’ve been thinking about you” type of notification.
To send a tap from your Apple Watch, follow these steps:
Press the Side button to bring up your Friends ring — regardless of what you’re doing on your Apple Watch.
Twist the Digital Crown button to select someone in your Friends ring or you can touch the person’s initials on the screen to jump to that contact.
You can now draw, tap, or put two fingers on the screen to send your heartbeat.
To send a tap, tap a pattern on the screen, such as two quick taps in the top-left corner and a single press on the bottom right of the screen.
After you complete those taps, the person you’re tapping to sees and feels the tap on his or her Apple Watch — visually presented as small and large rings that disappear — and he or she knows it’s from you because your name is in the top-left corner (which is the same for a sketch and a heartbeat).
The recipient can “play” the pattern again by tapping in the upper-right-hand corner. If and when the person you’re tapping with replies with a Digital Touch, he or she can choose to reply with something else, such as a sketch or a heartbeat instead of another tap.