1. Siio, I., Hayasaka, T.: Putting information to things: RFID tags and their applications. IPSJ Magazine 40(8), 846–850 (1999)
2. Murakami, M., Kuroda, T., Manabe, Y., Chihara, K.: Shopping support system for blind people using barcode. In: Proc. Human Interface 2001, October 2001, vol. 1412, pp. 97–98 (2001)
3. Tatsumi, H., Miyakakawa, M., Kotaka, Y., Murai, Y.: Incorporation of bar code reader system in the education for the visually impaired (Part 1) – Proposal of a prototype. TCT Techno Report 10(2), 27–31 (2003)
4. Satoh, I.: Bridging physical and virtual worlds with mobile agents. IPSJ Journal 44(8), 2218–2229 (2003)
5. http://www.ibsjapan.com/PocketScannerSDK.htm