# FAQ

**Q: How can I restrict a credential to a specific individual?**\
A: Specify the recipient DID when creating the offering. The wallet must prove ownership of that DID, ensuring only the intended recipient can claim it.

**Q: Will updating a schema affect previously issued credentials?**\
A: No. Existing credentials reference their original schema version, ensuring compatibility and trust over time.

**Q: How do wallets retrieve credentials?**\
A: Wallets scan the offering’s QR code, authenticate using the authorization endpoints, exchange the code for a token, and then request the credential.

**Q: Can I rotate keys to enhance security?**\
A: Future enhancements will enable key rotation. Currently, keys are managed automatically by the Issuer Service.

**Q: Will the Issuer Service support advanced privacy features?**\
A: Yes. Future releases will include ZKPs and Selective Disclosure to support privacy-preserving credential presentations.