In this paper, a ubiquitous environment on the basis of the RFID technology to promote user's experience is presented. On such an environment, users have opportunity to get information with handheld device such as PDA about a specific object on a contextaware manner. In addition, users can share with others who had been here on blogs. An example of an art gallery was built at a college in Taiwan. The implementation detail and experience learned were presented.
A wireless intraoral pH telemetry system for salivary and plaque pH measurement was developed and examined. The actual SiZE of intraoral pH telemeter unit is 8 mm x 16 mm x 2 mm including a rechargeable battery for more than 24 hours measurement. The unit was covered with polyurethane for waterproofing and was applied to the exterior teethridg e of a volunteer. The intraoral acidity of the volunteer was successfully measured without interfering his daily lifo such as eating, dr inking, speaking, and sleeping. The accumulated data in the telemeter unit was transferred to a light emitting diode on the surface of the unit and the emitted light was detected, decoded and transferred to the personal computer and analyzed.
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