It is true that technology makes our lives easy. The way we pay our bills, the way we get in touch with our friends and many other things.
The scariest thing is that when the machine slowly take control of everything. I came across this article and for me it is quite scary.
Hearing voices at the store
It is terrifying as you walk in the store to buy groceries when you hear voices talking to you but no one is around and nobody hears it.
It is called Audio Spotlight system that uses tiny speakers to focus the sound into narrow beam. It uses a beam of ultrasound to control the sound distribution. Ultrasonic frequencies are too high for the human to hear, but when the sounds travel from Audio Spotlight system, the air distorts the sound and it is audible. And the customer need to be at the right place to hear it.
Wow, they can really beam the ads into customer's brain.
Here's a video
Scary Technologies