Reverse engineering shopping cart security

February 28, 2011 By 29 Comments

All this talk about 555 timers is causing projects to pop out of the woodwork like this one that reverse engineers a shopping cart security mechanism. The wheel seen above listens for a particular magnetic signal and when encountered it locks down the yellow cowl, preventing the wheel from touching the ground and making the cart very hard to … Read the rest

Filed Under: radio hacks, security hacks Tagged With: , , ,

Capslocker 2

April 2, 2009 By 19 Comments

caps

Almost exactly a year ago, we posted the random USB capslocker. [Garrett] has revisited the idea to build a smaller, neater version. He has posted the build process to give us an idea how he goes about building things. The overall build is quite nice, but part if its neatness can be attributed to the fact that he had … Read the rest

Filed Under: peripherals hacks Tagged With: , , , , ,