How to Make an Invisible Ink Message on Your Own
Do you want to give someone a secret message? or do you want to write secrets down so that only you can see it? Being able to make an invisible message is a really cool ability and you are feeling like a secret agent.
Now Evebot PrintPen, as a printer designer and producer, releases an invisible ink cartridge. Please watch the following video and see its performance. Meanwhile, take attentions that:
- Invisible ink is not-skin friendly.
- The ‘invisible’ ink is visible when under UV light.
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