Tricorder Metaphor

I had occasion, the other week, to do some quick research internetting in search of wearable sensors. (For INJECTION.) The sort of thing where you might clip an environmental sensor to your jacket or bag. Like the Scarab, which Kickstarted in 2015 - and hasn’t shipped yet. The Pebble Core is a clip-on networked computer that can be used for… streaming Spotify and, if in the US, ordering shit on Amazon, while running. I can’t even find good plug-in sensors for iPhones. I assumed I’d just lost track of the field, and the world was just swarming with little devices that sniffed the air and looked at the sky and talked to phones. Am I missing something?

(I bought a Pebble Time Steel smartwatch largely on the promise of “smartstraps” - in this design, power can be sent through the watch to the strap, to run additional computing modules laid therein. As far as I know, nobody’s shipped any yet.)

I don’t like to go to Star Trek metaphors - not least because, as I’ve pointed out in the past, Captain Kirk had to tune his communicator and it couldn’t take photos and post them to Instagram - but I feel like the tricorder metaphor should have been and gone by now. As old and tired and dumb as that sounds. What about this have I gotten wrong?

Something about this is bugging me. I think I’m going to be picking at it a bit.