3D Secure is not automatically enabled in production accounts and is only compatible with certain Braintree configurations in specific regions. If you are interested, contact our Support team and tell them you're interested in 3D Secure. They can help determine if you can use 3D Secure and if so, enable your production account.
Merchants based in the US must complete additional setup and integration steps to successfully process with Amex SafeKey. If you haven't already contacted our Accounts team, you'll need to do that first. You'll find the changes necessary for Amex SafeKey in the client-side guide and important considerations for liability shift.
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