Yes, it does have to be clear. The indicator is a sunlight readable lamp, so a little transmission loss is acceptable though.
IRStuff-
That's getting closer. I'm contacting them to get more information.
If I only had the resources to work with ITO in house, this would be a non issue.
EG
Sorry if I wasn't clear. A PDA style (resistive) screen would work fine, but everyting that is currently available ia larger than the form factor we are looking for. Think 1 inch square. Now obviously the technology exists, and it's not very expensive, but to have something with our exact...
We have an existing indicator light that we would like to add a button function to. I have researched, and experimented with capacitive teouch sensors, which work very well for this particular purpose. The problem is that a gloved hand will not operate a capacitive sensor, and a stylus is out...