Tattoos you can turn on and off

Johnny Mnemonic meets Blade Runner vibe: A duo is assigned to hunt a network of data smugglers who use "toggle tattoos" to transport encrypted secrets with zero knowledge. Starring Jason Statham and Liam Neeson. Brought to you by Carl's Jr.

> These dyes are encapsulated in nanoparticles of polymethyl methacrylate (PMMA) — a medical-grade, glass-like plastic that is already used in medical implants and dermal fillers

Nano plastics? :p

Still pretty neat. I like the example picture in the article too

is someone bored and going around hn front page editing all the titles. This is the second post i see in the last hour or so that was changed to a worse title.

So just fill your skin with this ink and use a laser to print any pattern.

Looking forward to see human ads

A cool concept, but regular daylight making it disappear again sounds pretty annoying.

Regardless of the actual tech here, "he turned his tattoos off" has "the door dilated" vibes. Very cool.

This probably has some cool applications for magicians to do unique tricks where certain things appear on their skin.

Despite the limitations, that is dope as heck.

Instead of focusing on tattoos, could we work on this being used for bistable displays, like e-ink but using light pulses to transition each pixel?

Why not have e-ink in your skin..

So much hype in the article and in the paper for it being "programmable" when it's just... UV reactive? Like, cool but calm down

> In outdoor daylight conditions, including shade, the UV content of incident sunlight is sufficient to activate PhotoTat to a photostationary state

https://www.cell.com/matter-light/fulltext/S3117-5848(26)001...

Does it turn the lymphedema off too?

An alternative to "customizable/dynamic fashion" like this would be tags/markers on people's clothes that are invisible to the naked eye but can be detected by AR glasses, making you appear to have different clothing, accessories, tattoos etc to people wearing those glasses.

But man none of the major company execs have a hint about any of the cool applications of AR sigh

[dead]

Your auto-immune system does not like ink.