The need for the bracelet makes this a lot less attractive than it could be. I've been waiting for ring-based UIs since Pratchett's The Dark Side Of The Sun. F

The need for the bracelet makes this a lot less attractive than it could be. I've been waiting for ring-based UIs since Pratchett's The Dark Side Of The Sun. For example: contactless smart cards. Put them in ring form. Then you just have to wave your hand at the reader for them to work.