electronic chip to attach to a pair of glasses so that when she misplaces them she can whistle and the glasses will whistle back

it 'll be a good tool for blind people.it is more convenient than dog.it also help show the way exactly.i think the first time show this product's price will be high , so we need find how to reduce product's price.in all the world ,there are a lot of blind people so this invention is helpful and a good business idea...if we can product this thing ,we should use some thing to give to poor people .