It’s not very clear if the Uniting U disk can compartmentalize your files as per sharing and non-sharing files, but what it can do is increase the storage. In the era where we talk about terabytes, small USBs with GB storage may seem misplaced. However when it comes to the majority population, then simple GBs suffice. So for their sake and the sake of expansion without fuss, the Uniting is the way to go.
The Uniting U disk is a 2012 iF Design talents entry.
Designer: Shiyu Xia