Wirex, the provider of cryptocurrency payment services, has unveiled W-Pay, a crypto debit card that operates without custodial control and utilizes zero-knowledge proofs technology.

W-Pay is built on Polygon's Chain Development Kit (CDK) and aims to enhance scalability and security. It enables decentralized wallets and applications (dApps) to issue non-custodial crypto debit cards, eliminating the need for involvement from third parties.

Using W-Pay, users can conduct transactions up to predetermined limits, while also facilitating integration between dApps, non-custodial wallets, and traditional payment systems.

Key features of W-Pay include rapid and secure transactions made possible by zero-knowledge technology, compatibility with the Ethereum virtual machine, and simplified transaction processes through account abstraction.

This solution arrives at a time when Wirex is facing challenges with its card partner, UAB PayrNet, whose license has come under scrutiny.

Zero-knowledge proofs technology is gaining popularity within the crypto industry. Both Ethereum and Polygon have made significant advancements in the development and utilization of zero-knowledge proofs.