Problem
Like all handicapped people, deaf people also have so many problems just by living in the world which is designed for majority. Especially in crowded cities and environments, there are lots of dangers for a person who cannot hear, and dangers often represent themselves with a sound, usually the sound grows as the dangers get bigger. A simple car horn can be a good example for that.
Need
There should be a sound sensing device which shows the sound level of the environment the person stands. This device should vibrate at high levels of sound in order to warn the person when s/he's walking or does not check the device.
Target Segment
Deaf people.
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