>>http://edition.cnn.com/2013/05/02/tech/innovation/future-of-design/index.html
>
>About the only technological innovation I would truly like to see is 3D printing advanced enough to be replicator technology.
>
>Imagine clothing and feeding the billions via electrical input. The electricity could come from solar panel farms installed in desert areas -- turning otherwise useless "farm land" into an unending source of energy for daily food and necessities.


Talking about 3D printing: I don't understand the hype of having 3D printers produce plastic guns which are not detectable by metal detectors. You could have produced plastic guns in large quantities in China already for a much lower price, they would not have been detectable either.
Now that you can print them yourself, what is the big difference. It would have been easy for any organization to produce those without a 3D printer.


>>I wonder why these devices are always depicted to be placed on the hand or wrist. Wouldn't it
>>be more practical to have these tatoos be done on the forehead, since most airports and public
>> security systems are using face recognition to identify a person.
>
>Don't worry. That will be an option someday soon: "Would you like that on the right hand or forehead, sir?"
>
>:-)

I would put it on the forehead, it is just so much more practical :))