Manual

Bluetooth MagneSafe V5 Swipe Reader
78
We can ignore the last two bytes because we know the MagnePrint data is
actually 54 bytes long.
010002D4B69CD2C0C7617D0463316E853F9CB00FE2C5A3556E9CE5A9B2E6DB8914A6372C
A77367036EFAADC02F02C4FB76C6CFD8A59C0000
This is an accurate decryption of the MagnePrint data.
Encrypted Session ID (user didn't load, all zeroes)
21685F158B5C6BE0
As this is a simple eight byte block, we only need decrypt it with
the appropriate key:
21685F158B5C6BE0 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets 0000000000000000
This is an accurate decryption of the Encrypted Session ID, which
was not loaded by the user and thus was all zeroes.