Reddit reviews SyPen Invisible Disappearing Ink Pen Marker Secret spy Message Writer with uv Light Fun Activity Entertainment for Kids Party Favors Ideas Gifts and Stock Stuffers (12 Pack)
We found 4 Reddit comments about SyPen Invisible Disappearing Ink Pen Marker Secret spy Message Writer with uv Light Fun Activity Entertainment for Kids Party Favors Ideas Gifts and Stock Stuffers (12 Pack). Here are the top ones, ranked by their Reddit score.
WRITE YOUR SECRET MESSAGE: This magical invisible ink pen will write your secret message. Once your secret message is written with this invisible ink pen wait a few seconds, then shine the blue light from the cover of the pen and REVEAL MYSTERY OF THE SECRET MESSAGE.EXCITING SPY ACTIVITIES FOR KIDS: Kids will love these spy pens. Kids love using this kind of pen to keep their secret and play detective spy games. Invisible pen brings you an amazing variety of fun activities. From Surprise birthday parties, to revealing a top secret message to their parents or grandparents.GREAT GIFT FOR FUN PARTY FAVORS: This invisible Spy Pen comes in a pack of 12. Assorted colors to make the activity more exciting and fun. Parents can buy it for their kid’s party at home. Schools, Teachers can buy it for students for a school Activity. Add it for any surprise gift bag or as Stock Stuffers.PACKAGE INCLUDES: 12 2x per color invisible magic pens with built in UV lights. Batteries included and installed. The barrel of the pens will come in a variety of colors to keep the activity exciting. The Color of the light is Blue and it will display the words written in clear ink.BUY WITH CONFIDENCE: We at SyPens consider our clients our utmost priority. We value your business and treasure all of your input. If for whatever reason you are not completely satisfied with our product, please contact a member of our customer care team and let us make it right. We aim to please.
I numbered mine with these :
Invisible Disappearing Ink Pen... https://www.amazon.com/dp/B06WRR9QZN?ref=ppx_pop_mob_ap_share
In scratch.php they can obviously print it with a green background, so I am assuming you refer to when he speaks in conventional pages and you have to highlight his text to see it.
The coolest way to do it would be to print the text in white on a transparent plastic overlay layer on top of the regular white-background pages, and attach a black bookmark to the volume that can be slid in-between the transparent overlay and the page. Kind of like the way some kids science books have multiple layers that stack on the same picture with different descriptions of it.
Another visual technique would be to print the letters white-on-white with some sort of special ink that polarizes light, and attach a polarized plastic lens like the ones used in cheap 3D movie glasses to the package.
But I figure that would make the book expensive as all fuck. So probably they will go for the cheapest option and print the pages with the lines pre-highlighted. Perhaps printing the first page where he speaks twice, first without highlighting and then again with highlihgting, just to get the point across to the reader on what is happening.
EDIT: There is also the black-light technique. It is possible to print white-on-white using special ink that lights up when lighed with a violet light. There are even markers made with that, so it's cheap. They could print Doc's lines with that ink and package a cheap 35-cent chinese UV light with the books for the readers to use.
EDIT2: I found a toy that does something with glasses similar to my suggestion of the polarized lens.
Just get it here then.
If you want to make a faithful mockup of the blacklight version:
EDIT: Note that it takes special patience. You'll have to trace over your work one to three times to get it to glow properly on this quality of paper (without soaking through). Buuut, it's totally worth it to impress yourself and friends—and definitely cheaper than the $1,500 you'll have to shell out on eBay to a third-party hoarder.
There are sites that tell you how to make your own ink, but I'm lazy and so I just bought these. I've had no issues with them working, and I just make every card look like it potentially has room for some hidden text to keep players from having an idea.