The App also has an Audible Alert feature that can be used if you feel your safety is under threat. This can deter any potential attacker. An alert is sent to your loved ones informing that you require assistance.
This App is suited for everyone.
Know that if your family member has the Invisible Alert on their phone they are not alone. It's the peace of mind we all deserve.
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For example, you can turn on/off air conditioner (any infrared controlled device) remotely, when you are out of home - just send SMS to Android connected to Arduino with bluetooth HC-05 and infrared transceiver