I have a request to add some features if possible:
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Text to speach option
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Pre-saved messages
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The ability to send tones (I’m unsure if this is possible with LoRa) upon a button press (like PTT), or decode a message that allows the phone to play a tone.
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A panic alarm. If for example the user pressed the phone power button 5 times, an alert would be pushed to all devices and all phones vibrate 10 times every minute until reset.
For the tones, a separate Bluetooth button connected to the phone (such as a camera shutter release) would be useful as a PTT.
Any thoughts?