The Code

The following cipher text was found on the back of the badge:

   NjU2MjYxMzQgNjEzNzMzMzAgNjEzNjM5NjUgNjE2NTM1MzAgNjMzNDM0NjEgMzMzMTM2MzcgMzIzNDYyNjYgNjEzMDM5Mzg=

Simple Base64 decode provided:

   65626134 61373330 61363965 61653530 63343461 33313637 32346266 61303938

I've found a few options that seem promising. Given the creator of the badge and the focus on the hardware hackability of the badge, I'm guessing it might be an x86 assembly instruction set:

16bit - Full x86

0016:0000 65626134                        BOUND SP,DWORD PTR GS:[BX+DI+34]
0016:0004 61                              POPAD
0016:0005 37                              AAA
0016:0006 3330                            XOR SI,WORD PTR [BX+SI]
0016:0008 61                              POPAD
0016:0009 36396561                        CMP WORD PTR SS:[DI+61],SP
0016:000D 65353063                        XOR AX,6330
0016:0011 3434                            XOR AL,34
0016:0013 61                              POPAD
0016:0014 3331                            XOR SI,WORD PTR [BX+DI]
0016:0016 3637                            AAA
0016:0018 3234                            XOR DH,BYTE PTR [SI]
0016:001A 626661                          BOUND SP,DWORD PTR [BP+61]
0016:001D 3039                            XOR BYTE PTR [BX+DI],BH
0016:001F 38                              CMP BYTE PTR [BX+SI],AL

32bit - Full x86

00000000 65626134                        BOUND ESP,QWORD PTR GS:[ECX+34]
00000004 61                              POPA
00000005 37                              AAA
00000006 3330                            XOR ESI,DWORD PTR [EAX]
00000008 61                              POPA
00000009 36396561                        CMP DWORD PTR SS:[EBP+61],ESP
0000000D 653530633434                    XOR EAX,34346330
00000013 61                              POPA
00000014 3331                            XOR ESI,DWORD PTR [ECX]
00000016 3637                            AAA
00000018 323462                          XOR DH,BYTE PTR [EDX]
0000001B 6661                            POPAD
0000001D 3039                            XOR BYTE PTR [ECX],BH
0000001F 38                              CMP BYTE PTR [EAX],AL

Ref

This was linked on the back of the badge for the 4017 IC onboard