Bursage Loop drop
|Bursage Loop Trail drop|
Timeline of Recovery
The coordinates were discovered after a message from the agent system (202_999_3335).
- Xkeeper went out to the location but had to turn back before he got to the X.
- counterfeitsaint made it to the drop. At the crossing point of a large X on the ground was a box of 5 1/4" double-sided double-density floppies containing a SIM card and a mysterious black box (see below).
Mysterious Black Box
The homemade aluminum black box has a mini USB connector (see pictures) and two exterior buttons. Inside the plastic case is a circuit board identified as: https://www.sparkfun.com/products/11098.
It is an open-source single-board microcontroller (basicly small computer similar as raspberry.pi but simpler) that can be programmed for various functions; in our case it emulates PC keyboard. Model is Pro Micro - 5V/16MHz made by SpurkFun. It is processor board compatible with the Arduino software and hardware platform.
Connecting the device to a computer results in text output: one button increments the counter, the other moves to the next digit. 6 digits are accepted. Possible digits are 0123456789ABCD* (DTMF). Successful codes have a checksum === 4 (mod 10), where the checksum is computed by simply summing the digits (* = 4, A = 7, B = 8, C = 9, D = 10)When a successful code is input, there are 15 different outputs depending only on the first digit of the input code.
- The device will then output one of 15 different messages, depending only on the first digit of the input code. These messages are composed of 2048 lines of 5 5-grams each (10240 5-grams or 51200 characters total). The 5-grams are from a set of 25 characters excluding Z (A-Y).
- 0: salt = 975, output
- 1: salt = 287, output
- 2: salt = 246, output
- 3: salt = 558, output
- 4: salt = 870, output
- 5: salt = 829, output
- 6: salt = 141, output
- 7: salt = 453, output
- 8: salt = 412, output
- 9: salt = 724, output
- A: salt = 161, output
- B: salt = 473, output
- C: salt = 785, output
- D: salt = 744, output
- *: salt = 809, output
- Unsuccessful codes output "Invalid Agent Code. Check for proper application of Salt.". The device needs to be disconnected to reset.
- There is not enough memory on the device (32kb) to store all of these outputs- they must be being generated somehow.
Similar to the Lake Oswego CD and related P#.txt files, the top right letter of each file (last letter of the first 5gram in the right column) features a pattern of some sort. Of the 15 outputs, the letter at this position is only ever J, M, or P.
|filename||first righthand entry||last letter|
The SIM card is for the pre-bankruptcy (no longer operational) version of the [Iridium satphone system]. A SIM card reader showed that the card itself was empty.
Bar Code Explanation
- 89 881 6 931200036844 3 appears on the card
- 89: major industry identifier- telecommunication
- 881: country code (satellite)
- 6: Iridium identifier
- 931200036844: account ID number
- 3: check digit
Possibly Missed Green Paper
According to a message from 202 999 3335 a piece of green paper should have contained information on how to activate the SIM card. We suspect the green paper should have been at this drop, but it was not present when it was visited. We brute-forced the SIM card activation instead.
|Drop item name||Drop item condition||Drop item status||Location||Notes|
|Bursage Iridium SIM card||Unknown||Received||L0j1k||None|
[See Drop Item Inventory to edit this.]