Interesting company. NFC and RFID use radio energy and have been around for a while. There are a few variations of chips harvesting energy from other sources.

Interesting company. NFC and RFID use radio energy and have been around for a while. There are a few variations of chips harvesting energy from other sources. Including body heat, movement, ambient light (even electrical light), and other sources of energy. Magnetic energy of course make sense. After all that's how most generators work. Doing that without mechanical parts is interesting. A wireless sensor doesn't need a lot of power. With multiple possible ways to power them, somebody is likely to stumble on a way to mass produce them cheaply eventually.