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Wearable that vibrates on text/sms Answered

I am looking for a way to make a wearable (bracelet or hanger) that will vibrate when I send a signal (i.e. text message?). It's intended use is to alert players to certain pre arranged situations in a game. As coach I can not always reach my players across the field by voice so I want to send an alert signal. Also this is more discreet.

A smart watch is to big and volnurable. Bluetooth does not have the range so I am thinking gsm.

Any suggestions on how to build such a device?


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2 years ago

I have a son that is an electronic engineer...I have sent him your request to see if he would be interested in developing it...Do you have an email that he can contact you at?