🎉 Keycard Shell pre-sale has started! Â
Pre-order
 now for exclusive benefits! 👀
Keycard
Keycard Shell
Buy Keycard
Buy Keycard
Overview
Getting Started
Supported Wallets
Troubleshooting
Updating Firmware
Java SDK
Web3 API Extension
APDU API
Resources
Hardware Specifications
Contact
Documentation
APDU API
GET DATA
21 Aug 2025
#
GET DATA
CLA = 0x80
INS = 0xCA
P1 = 0x00 for public data, 0x01 for NDEF data, 0x02 for Cash data
P2 = 0x00
Response SW = 0x9000 on success, 0x6A86 on undefined P1
Response Data = the data as previously stored by STORE DATA command
Capabilities: NDEF for P1 = 0x01
Notably, this command does not require an open secure channel
Last edited
21 Aug 2025