There is a difference between having something permanently giving you feedback, and being able to get some information on demand. It's easy to conceive that bei

There is a difference between having something permanently giving you feedback, and being able to get some information on demand. It's easy to conceive that being quietly reminded of which direction you're travelling every time you turn a corner could change the way you see the world. On the other hand, it does seem to be a pretty rubbish implementation. A dongle that you have to anchor to your chest with piercings, and whose idea of "really, really small" is an inch square seems significantly behind where I believed implant technology was. I might be tempted to try this if it was a tiny, surgically implanted chip that had no other effects, but having some huge trinket dangling off my chest getting stuck in things seems like it would only be attractive to people who wanted something to act as a replacement for an interesting personality in conversation.