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- Hacker News
- I wonder if Defcon fucked over THIS YEAR'S badge creator (Bunnie Hwang) too, like Defcon did in 2024?
https://www.404media.co/def-con-badge-maker-pulled-off-stage...
by nekusar - Fucking over Bunnie Hwang would be a stupid move on an epic scale considering how well known he is.by walrus01
- wow it's transparent?
do UV and infrared photons not interfere with chip operations?
UV could have enough energy to change chemical bonds in the chip permanently?
by ck2 - They absolutely would, UV mostly since it’s higher energy. It’s not stated but it’s possible they’ve coated the chip with a UV opaque coating that is transparent to infrared though.by Kirby64
- The reason for transparency is to enable inspection, Bunnie has blogged about this. https://www.bunniestudios.com/blog/2023/infra-red-in-situ-ir.... For example, an end user who wanted to do inspection could receive the chip uncoated, inspect it, then epoxy-coat it afterward.
- Every transistor is a phototransistor. You don't even need UV light, just regular amounts of blue light, or large amounts of light anywhere on the color spectrum, can interfere with operation. Badges with COG silicon dies on an OLED or e-ink display regularly stop functioning, when taken outdoors, if the die isn't covered.
The inside of DEF CON event halls are the opposite of bright, so I would expect everything to function fine at the event itself, although outside in Las Vegas in August is about as far from dark as possible on earth, so the badges might not do so well when leaving the venue, depending on how well they are covered. A mostly translucent plastic package can still stop and disburse a lot of light, so they might manage, but I wouldn't rely on it.
by dlcarrier - by mtlsnk
- The hardware: https://baochip.comby ecesena
- 2 hours ago I got an email from Crowd Supply saying that my “Dabao Evaluation Board for Baochip-1x” order had shipped. Coincidence? Hmm…by rmast
- Nope! From the article: "The chip—called the Baochip-1x..."by jkonline