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'' During the spring term, Yelamarthi and five senior engineering studentstested the cane, which is equipped with Radio Frequency Identificationtechnology, similar to what retailers put on products to keep them frombeing stolen. The Smart Cane contains an ultrasonic sensor that is paired with aminiaturenavigational system inside a messenger style bag worn across the shoulder. For the test, the students installed identification tags between twobuildings on the campus in Mount Pleasant, Mich. A speaker located on thebag strap gave audio alerts when the system detected an obstacle and toldthe user which direction to move. Students wearing glasses that simulate visual impairment tested the cane. The students also created a vibrating glove to assist those who are bothvisually and hearing impaired.

 

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However, a lot of the features are available only with a Nest Aware subscription, which starts at $10/month, or $100/year. Read our full Nest Cam IQ Outdoor review. 98 View at AmazonIt wasn't all that long ago that having a home security system meant signing up with a company that would send a professional installer to your house to drill holes in your walls and run wires throughout your home. In most cases the equipment was free, but you had to commit to a multi year monitoring contract as part of the deal. There are still a handful of security companies such as ADT, Slomin's, and Vivint, that will send a consultant out to your house to configure a system specifically tailored to your home and then send a team of professionals to install everything, but more and more companies are offering do it yourself DIY home security solutions. DIY home security systems come in all shapes and sizes.