This may look like an ugly USB hub, but it's actually much more than that - it's Delphi's hat-tip to the fact that computing has flourished by having industry-standards in connectivity for the past few years, that users might want to come and plug PMPs, memory sticks and more into their car's ICE system, and that manufacturers may think about giving them the USB, audio and video socketry to do that.
At least they do in Singapore. All you have to do is tap your NFC capable phone to the scanner. NFC stands for near-field communications.
So basically this works a lot like most of the newer credit/debit cards that are coming out with the scanning technology were you just have to tap your card to the reader and off you go. The only difference it works with cell phones instead, this may not be the first mobile phone based payment system, but it definitely seems like the most functional.
How far away from your PC does the printer sit? If I had to guess, I'd say in most cases it's within 6 feet or so. That's because many standard cables are around that length (sure, they do come in longer sizes) and the fact that you really don't want to walk across the room just to get the paper you printed. However, if you desire to have that, or any other USB device plugged in on the other side of the house, there is a way to do it.