Call Your Kids Back at the Beach
![Beach](https://mydailyideas.com/wp-content/uploads/2016/06/beach-250x250.png)
Why?
It’s noisy on the beach, and you want to call your kids back (you want to go home, or they have gone too far in the water, etc.)
How?
Have a wristband that strongly vibrates when you “call it” using a phone app or a dedicated transmitter “button.”
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