Imagine, a computer with no screen and no keyboard. It just listens and talks to you.
That would be Alexa, the newest mass market introduction from Amazon. It is called Amazon Echo.
The closest device to it heretofore would be a GPS. You say "Take me to XXX" and it takes you there. It is the closest device to a real person today as it talks you there by voice.
Alexa, though, can talk about many things while you are busy doing something else like working in your kitchen.
I have not tried it yet, but I see nearly 30,000 mostly favourable comments about it on Amazon.
It could be a boon for those with limited vision and limited mobility, as attested to by commenters.
Somebody needs to set it up for them, of course. I would think that would be someone who is quite computer literate.
That could be someone who is comfortable using voice now with their computer, as I am doing as I dictate this posting.
So Alexa, what is the weather today?