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Notes:


Building systems that combine Internet services with standard PDAs is hard. When we use non-standard devices we are up against additional barriers. One approach is to build hardware from scratch. As a partial alternative, we are building an “access device” that acts as bridge from wired to wirelessness. This access device is complementary to the access points used to put wireless packets from 802.11 onto wired networks. It is a portable microprocessor with a wireless network interface and a tiny cable to a standard device for a PC. For example the standard PC device might be a digital camera or handheld scanner that connects via USB. Our microprocessor is a StrongArm on a small board running Linux 4.2 kernal and a small program that reads data from the camera and uploads it to our service. This program will implement the “glimmer” model described eariler.