This has showed up on just about every blog on my RSS feed while I was laboring on my thesis proposal over the weekend (which explains the recent scarcity of posts here). A Japanese company TechFirm (in Japanese) offers technology that allows consumers to bookmark retailers by pointing their RFID-enabled phones (more about them here) at the RFID readers installed in stores.
Location-based bookmarking is not a new idea. Last year, UK-based Hypertag began offering billboards and posters that beam product-related information to cell phones using infra-red signals.