- 20-30 metres Up to 400 mm 1 http://www.hp.com/hpinfo/newsroom/press/2006/060717a.html, 2 http://embedded.seattle.intel-research.net/wiki/index.php?title=Intel_Mote_2. 3 http://www.hitachi.co.jp/Prod/mu-chip/. Network Software - Microdevices and Microdevice Networks - The Software of the Very Small Figure 19.1 Hitachi Mu chip. Reproduced with permission from Hitachi. On 17 July 2006 HP announced 'a grain sized chip that could be attached to almost any object, making information more ubiquitous'. The device was called the Memory Spot and is illustrated in Figure 19.2. Here is the launch press release: HP Unveils Revolutionary Wireless Chip that Links the Digital and Physical Worlds PALO ALTO, Calif., Jul 17, 2006 HP today announced that its researchers have developed a miniature wireless data chip that could provide broad access to digital content in the physical world. With no equal in terms of its combination of size, memory capacity and data access speed, the tiny chip could be stuck on or embedded in almost any object and make available information and content now found mostly on electronic devices or the Internet. Some of the potential applications include storing medical records on a hospital patient's wrist- band; providing audio-visual supplements to postcards and photos; helping fight counterfeiting Ref: 3802176 Figure 19.2 HP Memory Spot. Reproduced with permission from HP Research Labs Bristol. Making Telecoms Work in the pharmaceutical industry; adding security to identity cards and passports; and supplying additional information for printed documents. The experimental chip, developed by the "Memory Spot" research team at HP Labs, is a memory device based on CMOS (a widely used, low-power integrated circuit design) and about the size of a grain of rice or smaller (2 mm to 4 mm square), with a built-in antenna. The chips could be embedded in a sheet of paper or stuck to any surface, and could eventually be available in a booklet as self-adhesive dots. "The Memory Spot chip frees digital content from th