At my job, we're creating a commercial kiosk where people can create and manage an account. We have the API calls available, but we need user accounts to sync with our WordPress powered website.
They won't be able to create/register an account from the website; they will simply log in with an existing account that was created at a public kiosk. From there they can edit the account and it should update on both the website and the kiosk server.
How can this be done in WordPress?