In Relay is an encryption proxy that sits between your client and your server. When you send data to your server via In Relay, it encrypts any configured fields before forwarding the request to its original destination. When we installed the HSM integration, we created an In Relay that proxies requests to this Vercel URL.

In this example, we're going to collect some sensitive data on the client: your latitude and longitude coordinates. Then, we're going to send them to the server via In Relay where they'll be encrypted on the way.