O:40
JAMMED (Judiciously Applied Materials and Magic Enhanced Doorunlocker) is the device enabling the unlocking of the front doors by electronic identification. Currently equipped with a reader for magnetic stripes. Other Input methods coming soon.
Operation
Opening the locked Omni from outside
- Approach the double doors (of the Omni) at the S.W. corner of 48th and Shattuck
- After using the Identification Method of your choice, the motor will run for for approximately 13 seconds, and a happy sound will play, and perhaps an LED animation in the window.
- After 13 seconds of the motor running, grasp the doorknob of the right door and pull BOTH door open. This works even when the original deadbolts are engaged, which is why you don't need a physical key. This arrangement is believed to be wheelchair-accessible.
To LOCK the Omni doors from the outside without using keys
- With both doors open, set the two deadbolts to the locked position (protruding)
- Carefully align the two doors so that the deadbolts fit into their holes.
- Close both doors and gently press on them during the next TWO steps.
- Push open the mail slot lid all the way, which activates the locking motor.
- Wait 13 seconds for the motor to engage the latches on the left door.
- Check to see that the doors are locked and can't be easily pulled open.
- If the left door is not secured on either the top or the bottom, unlock and start over.
Operating the door latch from inside the Omni
- The door on the right (from outside) can be operated normally with the doorknob (if the deadbolts are not locked) if the left door is latched.
- To latch the left door, put it in the closed position, open the mail slot door fully, and wait 13 seconds for the motor to latch the door.
- To UN-LATCH the left door, press the button attached to the vertical wooden bar inside the left door (labeled "OPEN")
Indicators
- The LED on the magnetic card reader will indicate RED if it fails to read your card. (BART cards can't be read)
- The green LED on the magnetic card reader will go DARK if it successfully reads your card.
- The LED on the magnetic card reader will not indicate whether a card is registered or not.
- An LED strip in the bottom right corner behind the frosted glass of the left Door will indicate motor progress. (In Progress)
- Audio speaker in a hole in the door to make happy or sad sounds (in progress)
Access Authorization
The individual collectives regulate who is granted Access via this system. Access will be revoked if the safety of the space is compromised independent of the members collective regulations.
Access list editing rights
- Jake
- Marc
- Matt
- Yar
- Jenny
- ...
Identification Methods
Magnetic Swipe
- TL;DR you need a card with a black magnetic stripe on the back, such as a credit card, phone card, gift card, or anything that can be read by our reader. Unfortunately BART cards do not work.
- The card you want to use must be registered into the system so that it will allow you to open the doors.
- The card DOES NOT need to have your name on it or be "valid" in any way, it just needs to have something recorded on its magnetic stripe.
How the card data is used
A Hash is created from the already present magnetization pattern on the the stripe. It is hashed using salted SHA1. This means that the information on the cards is not stored anywhere, so if someone steals the computer they will not have access to any private information.
Works with most standard magnetic cards without effecting there normal use. Does not work with 100% of the tested local transit tickets (MTA and BART). However, it is not advised to use Cards which could be harmful to you if the information on the stripes gets in wrong hands (like Government issued IDs or Credit cards). We can not exclude the possibility that Hackers could excess the System storing the Data.[1]
BART cards are so easy to get, why can't we use them?
- BART cards are not encoded using the bit-pattern standard that our magnetic stripe reader recognizes, and so it can't read them at all. Our reader double-checks every stripe it reads and only reports a reading if it is sure it read the card correctly.
- In the future, we could replace the card reader with a read-head attached to the microphone jack of the computer, and use a fancy program to read and recognize ANY card people choose to use. Search github for "magnetic stripe"
Detailed Description
Hardware [2]
The upper and lower bolts which keep the left door in place are retracted.
Software
The software is called DoorJam. It is written in node.js and arduino C and is available here.