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This mini pen can write anywhere - even underwater - and now it's 40% off

TL;DR: The ForeverPen Tiny Inkless Pen and Multi-Tool is the smallest pen ever made and also doubles as a slicing tool, and right now, you can get it for just $23.99 (MSRP $40). We spend our days ...
Ars Technica

Is there some kind of permanent ink/pen that will write on a Corsair Flash Voyager?

I'm working on a number of Corsair Flash Voyager USB flash drives. It would really be helpful if I could identify each one by labelling the physical surface with some kind of ink or marker. I tried ...
Houston Chronicle

This mini pen can write anywhere—even underwater—and now it’s 40% off

TL;DR: The ForeverPen Tiny Inkless Pen and Multi-Tool is the smallest pen ever made and also doubles as a slicing tool, and right now, you can get it for just $23.99 (MSRP $40). We spend our days ...