A total of 2 reviews of this product on Reddit.
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Yes, the technology exists! There’s a particular vendor that was at a trade show showing this off a couple years ago, they had a really good turnkey system for doing crispy LED pass-through with touch sensing on opaque plastic finishes, and unfortunately I can’t find the name or the link haha! It’s on Youtube SOMEWHERE! lol. The basic technique itself is called “dead fronting”:
An overview of the basic ambient-light cutouts is demonstrated in this vdieo:
It’s so common these days that you can even buy it in wood products:
There’s an interesting video on using veneer with an alarm clock for a nifty DIY alarm clock:
On a tangent, the touch-sensing technology has gotten crazy advanced over the last few years. This is a video a few years ago by Nanomade:
This basically applies touch sensing to any surface, whether it’s rigid, curved, or flexible, and is capable of being sensitive to touch, force (press/grip/push), temperature, and humidity. These days, we have multi-colored touchscreen surfaces, so it’s possible to do some really crazy stuff with some unique designs!
Do you have a project application in mind? If it’s fixed graphics, then using something like a Cricut vinyl cutter might be good for doing a basic backlit mockup!
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Oooh! So I just bought a desk clock like this last week.
https://www.amazon.com/dp/B07WGXRDJ4/ref=cm_sw_r_cp_api_i_.DBEFb07NAWKQ