Stick this light to your workplace to indicate availability

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So I've been doing some research and it seems there are 3 reasons for decreased productivity at the workplace: 1. Excessive emails. 2. Pointless meetings. and 3. Constant interruptions. Do you think this little light can fix problem #3?
Love this, I'm a backer.
I backed this on day one too. It's an interesting concept. I also thought using LIFX bulbs above my desk for this purpose would also work.
Very cool idea, but not a big enough problem for the hassle of hooking it up or dealing with recharging it — for widespread adoption. In my office, headphones in ear is the signal not to disturb.
the wireless version looks cool