Radio frequency identification (RFID), and more recently the development of Near Field Communication (NFC) technology, have popularized the idea of linking real-world products with online information and services. Apart from early prototypes, however, the benefits of such automated identification technologies have so far been mostly available to industry, rather than consumers. With the next generation of mobile phones capable of reading both traditional bar codes through their integrated cameras, as well as RFID tags using the NFC standard, end-users themselves could take full advantage of such ubiquitous identification labels, given novel information architectures that go beyond simple web pages or industrial enterprise resource planning (ERP) systems. This paper presents an open lookup infrastructure that allows commercial, public, and private entities to easily provide information and services associated with tagged items, thus facilitating the rapid development and deployment ...