ns in our terrestrial networks. The InterPlaNetary Internet Project Web site at www.ipnsig.org provides ongoing information about this exciting project. Internet-Enabled Devices One trend affecting the future of the Internet is the growth of Internet-enabled devices. As discussed in this book's introduction, we're looking toward programma- ble devices, mobiles, palm devices, Web TVs, videogames, picture frames, electronic teachers, and even smart surfboards. More and more home appliances are smart, including washing machines, refrigerators, and bathroom scales. Smart vehicles are increasingly being equipped with GPS receivers, and geographical databases will become more valuable as a result. An extension of Internet-enabled devices is Internet-enabled clothing. All these products will require sophisticated authentica- tion and cryptography mechanisms. RFID Applications Another technology affecting what's next on the Internet is the increasing availabil- ity and use of radio frequency identification (RFID). A growing list of RFID appli- cations can be found in the transportation industry, consumer products, drug and food IDs and shelf life indicators, patient identification, smart houses, and intelli- gent wearables. RFID is discussed in detail in Chapter 15. Chapter 8 The Internet and IP Infrastructures SIP Telephony The concepts behind SIP promise to be disruptive, and SIP represents something much more dramatic than VoIP. Whereas VoIP basically addresses only telephony, SIP opens the door to all sorts of capabilities that are not possible in the Time Divi- sion Multiplexing world, such as presence management across both voice and instant messaging, Secure SIP-based instant messaging behind the corporate fire- wall, instant messaging archiving, click-to-talk voice functionality, speech-to-text functionality, and specialty modes for road warriors and telecommuters. Chapter 9 discusses SIP in detail. Digital Objects and Libraries Digital objects and libraries will grow in importance. Industry experts are painting 