Actually, it could be a BIG deal.
Informational ease-of-access is about removing barriers. Specifically, the barriers between what you want known about your organization and who you want to know it.
What multi-touch does is bring your patrons one step closer to your products and services through direct interaction with the information they see on a tabletop display.
Consider getting a better view of your bank statements by sliding the “pages” around the screen with your fingers. Or enlarging a picture of a digital brochure by moving your index fingers apart. In other words, working intuitively with familiar objects, much as you would at your desk.
Barclays is apparently using Microsoft Surface as a touchpoint. It is a way to draw their customers closer to that sometimes elusive, personal relationship with the brand and what the company has to offer. Not through a conversation with a person, but through almost playful interaction with the corporation itself.