This idea was inspired as a response to @Darko's session. The idea is to construct an alarm that is connected to your smartwatch and has a furry appendage, something like the arm of a soft bear toy. You set the alarm and instead of ringing, the soft arm pats your palm till you wake up. The session image shows how I imagine the device would be like. I could not find anything similar to this idea on the internet.
Why the patting mechanism?
I initially thought of a mechanism where the soft toy arm rubs against your skin. But slight rubs on your skin could be scary (for some people) at best and may not wake some people up at worst. Also, the rubbing mechanism may need space and if the soft toy arm is caught between you and the pillow or the bed, it may not be able to move and hence, may not wake you up. Also, in the current idea, the patting will become rapid after a defined amount of time and hit your palm harder to make sure that even a deep sleeper wakes up.
Its movement may be ticklish on your palm and, thereby, wake you up. Also, something tougher than that may hurt if you accidentally use your hand to rub/ scratch your face in sleep. Also, pats from a soft toy will not make noise and wake the person sleeping beside you.
Why the palm of your hand?
The palms of your hand curl when you sleep (here is the biology behind that) creating space in your hand to hold the device and give the device some space to pat you.
What do you think about the idea? Will it work? If not, why?
What modifications can you think of to improve the device?
Note: A alarm that vibrates to wake you up is probably, currently, the least noisy way to wake you up. However, if you are sleeping on the same bed as a person wearing the smartwatch that vibrates to wake them up, you might wake up, too. The vibrations on the sheets and pillow create some noise that wakes up a light sleeper.