said by Guspaz:Similar to wireless devices such as gamepads for 8 bit game systems in the early 80s. They never worked no matter how many I bot unless the line of sight was spot on. Took me a long long time to trust 802.11 devices
My worry is that some of the low cost ones are so bad that people will see buy the things, get terrible results, and then be "scarred for life" by the thing. In that it will be a bad enough experience to put them off 3D printing for a long time.