The mood rings you used to buy at the dollar store had a heat-sensitive dye that changed hues based on your skin temperature. Michael Fisher wears an RFID chip-equipped Sesame Ring so he can punch tap terminals to pay for public transit. Apple might want to put a ring on its show floors sooner or later.
And maybe Samsung will, too. Patents filed in June and published this month are showing off a “wearable device (the ring)” that interacts with a “portable terminal” (a smartphone, a tablet, etc.) and allows the user interface with the terminal and possibly with other devices like ones connected through the Internet of Things.
The “how” of the process? You place the ring on the screen of your terminal and that enables a special GUI to appear on the screen for you to do a certain set of things. It may also be possible to operate the ring while you’re wearing it as it will have a “transceiver.”
In other news, Samsung also has a bioprocessor it’s about to mass produce that may be a more reliable skin temperature reader than a mood ring.