I'm not going to put words in their mouth but that sentence would lead any rational, technical person to infer they are powering their devices from all the "free" energy just floating around in the ISM band. If this energy is used sparingly when needed, devices using this power source can be used for long-term monitoring and tracking." "RF energy is all around us in most situations and tapping into it offers a virtually limitless source of electrical energy. I found the following blog post on their site. Specifically they tout the Bluetooth Pixels they sell. They do asset tracking and management using IoT. ![]() So I looked into the devices and found they are from a company called Wiliot. The story would end there but, as an engineer working in this space, I was curious. He proceeds to unplug all of them and the signal vanishes. They are wireless and we have 3 of them running." The construction company uses it to track our movement and make sure we're wearing our hard hats, etc. We ran into a worker who says "Oh, maybe it's our personnel tracking equipment. 8dBM on the entire first floor!!!! Something is absolutely blasting energy into the ISM band. ![]() There is construction going on downstairs, let's see what it looks like there. ![]() Leave the building and the signal dropped to background noise. Wow, -32dBm right in the frequency range we use. □įelt like a noise issue but, really, noise just in the office? And THAT much noise? It seemed a long shot so I bought a cheap spectrum analyzer and a 915MHz antenna for it. Worked everywhere else except in the office. A product I'm working on recently had issues communicating at the company headquarters.
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