Magtek eDynamo - Command 0 X4 C - Get Tamper Status (Tamper Only)

8 - Commands
eDynamo| Secure Card Reader Authenticator | Programmer’s Manual (COMMANDS)
Page 92 of 245 (D998200115-17)
8.3.17 Command 0x4C - Get Tamper Status (Tamper Only)
This command retrieves two bytes representing the device’s tamper history and current tamper status,
including which tamper circuits are active / armed to detect tampers, which ones have detected a tamper
in the past, and which ones are currently registering a tamper. It also reports whether the device signature
has been erased in response to tampering or removal of the tamper detection battery. When a device has
detected a tamper, all incoming commands, including this one, fail.
Request Data: None
Table 8-35 - Response Data for Command 0x4C - Get Tamper Status (Tamper Only)
Offset
Field Name
Description
Byte 0
Tamper History
Bit 0 Tamper Armed Status:
1 = Tamper is active / armed
0 = Tamper is not active / armed
Bit 1 Tamper Circuit 1 History:
1 = Circuit 1 was tampered
0 = Circuit 1 was not tampered
Bit 2 Tamper Circuit 2 History:
1 = Circuit 2 was tampered
0 = Circuit 2 was not tampered
Bit 3 Device Signature Tamper History:
1 = Device Signature was tampered
0 = Device Signature was not tampered
Bit 4 Device Signature Erased History:
1 = Device Signature was erased
0 = Device Signature was not erased.
Byte 1
Tamper Status
Bit 0 Tamper Circuit 1 Status
1 = Circuit 1 is open
0 =-Circuit 1 is closed
Bit 1 Tamper Circuit 2 Status
1 = Circuit 2 is open
0 = Circuit 2 is closed
Result codes:
0x00 = Success
Example Request (Hex)
Cmd Num
Data Len
Data
4C
00
In the following example, tamper is armed, circuit 1 has registered a tamper, and the device signature was
erased.