"The challenge is to make a microbattery array that is robust enough and that does not have a single short circuit in the whole array via a process that can be scaled up cheaply, " said Prof Clare Grey from the University of Cambridge's chemistry department.
Once having come up with the idea, the next challenge is being able to communicate it across a broad array of branding channels, places where consumers experience the brand, the most important of which is the shopping environment.
Yet the same barriers that make it a challenge for one entrepreneur to build software for a wide array of phones can provide an express lane for others.