Making a Proximity Card
How Waterloo made his own proximity cards – “Lots of companies use proximity cards to control physical access. An employee holds their card within a few inches of the reader; the reader receives a unique id from the card and transmits it to some central computer that tells it whether or not to open the door. This is rather magical, considering that the tag is credit card-thin and contains no battery. The trick is the same as for RFID tags. The reader constantly transmits a rather strong carrier; the tag derives its power and clock from this carrier, kind of like a crystal radio.” Link.
Peter Green made a portable Mac Mini! “Why the Mac Mini Portable? Well, in short I wanted a machine that was really dinky to just pop in my rucksack, and while the PowerBooks/iBooks are pretty small, they still take up a fair amount of space. I wanted something with a very small screen that was more or less hand-held, and mac just don’t do that [yet].” [
Jeremiah writes “As a new Linux user, there is a sense of frustration. You can’t seem to get anything working correctly or you just don’t know how. I know exactly how that feels, and after spending countless hours searching forums and guides, I have compiled a list of the ten guides I find most useful as a new Ubuntu user (and Linux user for that matter). So, here they are, not listed in any particular order.” Thanks Jason! 
MAKE pal Jean interviewed Garnet Hertz (we covered his work in 
SpiderWrench has a Maker challenge! “Ok, I really need help with this. I have several prototypes without power, (or rather, I have been forced to use an AC power strip with 30 individual, ugly chargers and a mess of wire everywhere) here is the situation: I need to be able to charge 30 new cell phones on a single power supply. Through some risky experimenting on my part, I have been able to charge 3 cell phones off of a single wall transformer, and I know I need more power to get 30 up and charging. I have thought of using a modified laptop/PC power supply, and I think it will work, but I do not want to risk blowing up 30+ $300 cell phones which are not mine to blow up.” Post up ideas in the forum! 
This is crazy, I just recieved my Powerglove off eBay and another Gyration mouse for a VR glove project and Leadingzero built one! – “The time has come to bring new life into our old friend and to welcome him back as a productive member of society with the ‘Powerglove Mouse’. With this hack I can strap on the Powerglove and have total control over the mouse cursor on my computer. I can control the cursor’s position with a wave of my hand and activate the mouse clicks by simply bending my fingers – a beautiful integration of old and new.” [
Chris Jang is building his own autonomous robot – “This robot is my first electronics and embedded systems project. I studied Electronic Circuits and Applications by Senturia and Wedlock for six months and then rebuilt and cross compiled my home computer systems with a Linux From Scratch book to prepare for it. This project is also the first time machining moving parts (as simple as the front suspension is, the parts do move). I’ve maintained what a friend referred to as an “mail blog” during the project. After some progress or discovery, I emailed a status report of sorts, usually with pictures and (rarely) movies attached. A coworker convinced me there is value in these emails as artifacts of the project history.” [