March 2021
 over 4 years ago 
In March 2021 we added the PIN Retrieval Service guide, corrected the HMAC validation section in About Events API, and corrected the response schema for the Get Account Cards endpoint. Click March 2021 to see the details.
PIN Retrieval Service guide
Use the PIN Retrieval Service to display a CAPTCHA image of the cardholder's PIN without the PIN traversing your system.
HMAC example update
In About Events API, we fixed these errors:
- In the example HTTP request header, these fields contained incorrect values:
- Content-Length
- Signature
- token_type
 
- The alphabetization of entries in the hashmap was erroneous.
Get Account Cards correction
In the response schema for Get Account Cards, we updated the data type for cards from string to object. 
