For a product that's disposable, I doubt any such system could justify its cost. | Hacker News

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		benplumley on June 16, 2015 \| parent \| context \| favorite \| on: Mathematicians Are Hoarding a Type of Japanese Cha... For a product that's disposable, I doubt any such system could justify its cost.

noir_lord on June 16, 2015 [–]

http://i.imgur.com/UDAZQUI.jpg

Depends on the cost to implement and the margin you can charge over competitors I guess.

Symbiote on June 16, 2015 | [–]

The whiteboard pens we have at work have a semi-transparent barrel:

http://www.postofficeshop.co.uk/images/product/extraLarge/2/...

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