Mk1 and magic ring

[usb] pm3 → hf search
[|] Searching for ISO14443-A tag…
[+] UID: 9A 3D E1 1A
[+] ATQA: 00 04
[+] SAK: 08 [2]
[+] Possible types:
[+] MIFARE Classic 1K
[=] proprietary non iso14443-4 card found, RATS not supported
[+] Prng detection: weak
[#] Auth error
[?] Hint: try hf mf commands

[+] Valid ISO 14443-A tag found

[usb] pm3