Stealth • 3m
Idea is good but is it practically implementable 1. Which speaker are you gonna use as I have never heard of any pendant size speakers covering a range of 2 to 3 km 2. How will the device trigger the siren, does the wearer will have to do it manually as panic situation can be a problem for this and also wearer will hesitate to use it immediately because they will be in doubt if the person is a suspect or a culprit although still the device will help in reducing the case numbers 3. Once the device gets recognised in the society, will it be reliable as it will become the first thing to be stolen before the phone And also I didn't understand why you need to patent the sound
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