## On the Subject of Barcode Cipher

I didn’t realise we were going shopping.

• You are presented with 3 barcodes, a 6 digit number on a display, and an input display that cycles from the numbers 0 to 9.
• To solve the module, you must input a number for each barcode.
• Upon inputting a number for a barcode, both displays will hide their respective information.
• Upon receiving a strike, they will become visible again.
• Each barcode refers to a piece of edgework (refer to Table 1).
• Find the count of the edgework each barcode refers to (in the case of "Serial Number", use the sum of all the characters where A=1, B=2 etc.).
• To find the numbers for each barcode, you must first split the 6-digit number displayed into three 2-digit numbers.
• XOR the first 2-digit number with (the first barcode number × the sum of the digits of the 6-digit display). Repeat this step for the next 2-digit numbers and next barcode numbers.
• Modulo all of these numbers with (the last digit of the serial number % 5 + 5).
• Submit each number by changing the input display to the input number, then pressing the respective barcode.

Edgework Barcode
Serial Number
Batteries
Battery Holders
Ports
Port Plates
Lit Indicators
Unlit Indicators
Indicators