Geek Porn: Unboxing a mint PowerBook 1400

A member of theLEM PowerBooks list got their hands on a factory-sealed PowerBook 1400, and shared the unboxing photo set:

A member of the LEM PowerBooks list got their hands on a factory-sealed PowerBook 1400, and shared the unboxing photo set:

I can haz powerbook?
Slideshow at Photobucket »

Very nice set.

SimpleOpenID for php

The OpenID library I’m using for Rosebleed (and other projects, both major and minor) is SimpleOpenID from PHPClasses.org.

The original class did most of what I needed, but I made some minor changes. I’ve emailed the original contributor to offer my changes back, but until I hear back, I’ve posted my modified version here:

Comments/feedback always welcome.

OpenID on Rosebleed.net

I’ve finally finished up the OpenID signup for Rosebleed. The workflow is what you’d expect – OpenID box on the login form, if the given URL isn’t recognized then it redirects to the signup form and prepopulates it with the sreg fields.

I did notice a strange behaviour in OpenID; I’m not yet certain if I missed it in the spec or if it’s left to one’s judgement (note to self: read the spec again)… Anyway, here’s what happens:

– Say I sign up with “roosenmaallen.com”. This site delegates to my ClaimID page, so the openid.identity response is http://openid.claimid.com/silvermoon82, and this is what I actually use to identify the user.
To my thinking, I should be able to log in using “roosenmaallen.com” (since that delegates to my ClaimID), or claimid.com/silvermoon82, or openid.claimid.com/silvermoon82. These URLs all end up at the same identity, so they should be equivalent — and that’s how I implemented it on Rosebleed.

I’ve noticed other OpenID-enabled sites handle this differently. On the OpenID Directory for instance, I first signed up as “claimid.com/silvermoon82”. I’ve gotten in the habit of logging in using roosenmaallen.com; but when I try that at OpenID Directory, I get an error message that my email address is already registered to my ClaimID URL.

So, barring finding that the spec keeps “equivalent” OpenID URLs separate, I think I’m in the right here; always open to feedback though.

Update [2008-03-19]: I’ve checked the spec, and as it turns out, I’m actually in the wrong:

So, to use www.example.com as their Identifier, but have Consumers actually verify http://exampleuser.livejournal.com/ with the Identity Provider located at http://www.livejournal.com/openid/server.bml, they’d add the following tags to the HEAD section of the HTML document returned when fetching their Identifier URL.


Now, when a Consumer sees that, it’ll talk to http://www.livejournal.com/openid/server.bml and ask if the End User is exampleuser.livejournal.com, never mentioning www.example.com anywhere on the wire.

The main advantage of this is that an End User can keep their Identifier over many years, even as services come and go; they’ll just keep changing who they delegate to.

Why Super Nintendos Lose Their Colour

I found a great article about the whys and wherefores of plastic yellowing in classic machines:

Vintage Computing and Gaming | Archive » Why Super Nintendos Lose Their Color: Plastic Discoloration in Classic Machines

The article focuses mainly on the SNES, but mentions old Macs as well, and should apply equally to anything made of the official “this is a computer” grey or beige plastic.

The short version: Plastic is an organic compound (made of basically the same stuff as people) which breaks down over time. As it breaks down, it reacts differently to light and turns yellow. If the composition of the plastic is not perfect (exactly correct proportion of catalysts, flame retardants, pigments, &c.), the breakdown will occur faster. It’s also accelerated by visible and UV light, heat, and oxygen.

The yellowing is caused by the chemical composition of the plastic changing, so it’s irreversible. The author does go on to list some ways to mitigate the damage, but reiterates that there is no non-destructive way to fix it — you can remove the damaged plastic, or cover it.

Go green by going black? …not convinced.

I just came across an interesting post about energy savings based on the colour of a webpage (specifically, Google – but the idea applies everywhere): A black Google start screen? | Wired Gecko.

I’ve found other posts dating back to May of this year (The Numbers Guy) on the subject, so it’s really not a new idea.

The largest part of my doubt is the question of technology. In a CRT, it does indeed use more energy to display bright colours than dark (ref. DOE Energy Star Desktop Information). A CRT produces bright colours by directing an energy beam at the front of the screen; more brightness == more energy used.

Continue reading “Go green by going black? …not convinced.”