With two daughters of my own my concerns regarding their safety is always on my mind. I think this is an incredible product with a potential to really safe lives and give parents some peace of mind. Good work!
The idea is good, except for the fact that it doesn't "deter" any violent crime or any non-violent crime.
If the victim is struck in the head or can't get a reliable description of the "attacker", then having the other functions are really no more than fancy technology. The audio recording is good idea as well as push notifications, but in a struggle, the audio is going to be useless because of contact and rubbing on the microphone as well as impacting with the unit iteslf.
I don't see that is will provide any real evidence to Law Enforcement. It will absolutely NOT stop or deter and attacker of any kind. It's a nice "piece of mind" piece of tech, but really can be more dangerous because of the false sense of security causing the potential victim to be less aware of their surroundings.