**Speaker**: Yingtong Lai (Geometry) **Abstract**: web3 has accelerated development in many privacy-enhancing technologies, such as zero-knowledge proofs, multi-party computation, and homomorphic encryption. Due to their highly experimental nature, many of these primitives have yet to see serious adoption in products outside of web3. This talk presents existing business cases for privacy-enhancing cryptography outside of web3, and identifies classes of potential future use-cases. We also highlight some gaps in efficiency, security, and standardisation that builders should prioritise. We invite the audience to raise further use-cases and roadblocks, both before and during the talk. **Slides:** TBD **Video**: TBD