All event technology is wearable if you try hard enough.
Glue your digital stopwatch to a wristband and spray paint it gold, and you’ve got a smartwatch.
Knit a sweater in a QR code pattern, and you’re mobile access to information.
Tape a phone to the edge of a sun visor and let it dangle in front of your face during a presentation.
More information: http://blog.capterra.com/wearable-technology-for-events/