Your iPhone case, now a canvas.
A full-colour E-Paper display on the back of your iPhone. Powered by a single tap. No battery, no charging, ever.
We build batteryless devices powered by a single tap. Calm technology for people who love the quiet of ink and the texture of paper.
The fastest path is a curve.
A brachistochrone is the curve along which a ball rolls between two points in the least time. Not the straight line, but the cycloid.
We named BrachistaLog after it: the most direct path from invention to your hands.
The fastest path is a curve.
A brachistochrone is the curve along which a ball rolls between two points in the least time. Not the straight line, but the cycloid.
We named BrachistaLog after it: the most direct path from invention to your hands.
Tap. Refresh. Done.
No cables, no charging, no settings to fiddle with. Your iPhone does all the work.
Pick an image
Choose any photo or artwork in the free LogCase app.
Tap to send
Tap Send in the app. The iPhone inside the case powers the display over NFC and delivers your image.
It stays
E-Paper holds your picture with zero power until you choose to change it.
From four colours to a full palette.
The original LogCase -C and -R use four pigments: black, white, red and yellow. Every picture came out with a warm, sepia tone.
LogCase Full Colour adds green and blue. Six pigments, and finally, full colour.
Paper-like colour, readable in sunlight.
E-Paper doesn't shine light at you. Like printed paper, it reflects the light around it, so the brighter the day, the clearer the picture. Backlit screens wash out in the sun; LogCase only gets better.
No battery. Nothing to charge.
LogCase draws power from the iPhone it protects, over NFC, only while it updates the image. There is no battery inside, so there is nothing to charge and nothing to wear out.
- Powered by your iPhone's NFC
- Change images in seconds with the free app
- Images stay on screen with zero power
The LogCase family
Latest stories
LogCase App update 5.20
We have updated our core LogCase companion app to 5.20. Your favourites stay on your phone Favourites are now live on your iPhone instead of on our servers, and you...
![[Kickstarter Campaign] LogCase: The Full-Colour E-Paper iPhone Case Powered by NFC](http://www.brachistalog.com/cdn/shop/articles/Picture_Material_Set_36.png?v=1777225843&width=1200)
[Kickstarter Campaign] LogCase: The Full-Colour E-Paper iPhone Case Powered by NFC
The most advanced E-Paper display we've ever built. No battery. No charging. No compromise. Your iPhone case is the most-seen surface in your life. You glance at it dozens of...
Understanding E-Paper display technology
Electronic paper (’E-Paper’) is a type of reflective display that mimics the look of ink on real paper while adding the flexibility of digital content. Unlike backlit LCD or OLED...