Single devices, such as a watch, can capture what is happening at one part of the body. We wanted to find a way to use multiple devices to gain a picture of what the whole body is doing. A central challenge in achieving that goal is getting the devices to talk to each other, a problem we solve with wireless communication.
Using wireless signals, a device on the back of a body can talk to a device on the front of the body if the devices are correctly connected. Wireless signals tend to just spread out in space from their point of origin. So we had to find a way to confine the signals and then direct them over the surface of a body to a specific point. We do that with conductive fabric patterns stuck onto a regular T-shirt.
The tracks of the pattern “trap” the wireless signals from each device and then move them to where we want them to go—you can think of the patterns as a waveguide for the signals.
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