Slashdot Mirror

← Back to Stories (view on slashdot.org)

Build Your Own Electronic Key Card Lock

Posted by michael on from the friday-night-build-your-own-series-continues dept.

edBX writes "GideonTech.com has a new guide up on how to make your own electronic lock using a key card. Built using a phototransistor, infrared-emitting diode and a few ICs, they are able to turn on their computer using a punched out phone card."

2 of 168 comments (clear)

  1. Slashdot mirror by LoneIguana · · Score: 0, Troll

    This has already been slashdotted! I think slashdot should mirror sites before it posts the story to prevent killing these poor servers.

  2. This is retarded, seriously guys by Anonymous Coward · · Score: 0, Troll

    Next on "Michael's Friday-night Slashdot Bag 'O Fun:" How to make a secure telephone with two tin cans and a piece of string.

    This is so low tech it's not funny. Hey did you know you can take an LED, a resistor, and a battery and get a little shining light too? OMFGLOL!!1!