The "M" in X-Apple-I-MD-M stands for . While the companion header X-Apple-I-MD changes frequently because it acts as a dynamic OTP token, the X-Apple-I-MD-M header acts as the fixed anchor. 1. What Data Does it Contain?
x-apple-i-md-m wasn’t metadata.
At its core, X-Apple-I-MD-M stands for . It functions as a client-side tracking token passed over encrypted HTTPS requests to Apple’s primary authentication endpoint: gsa.apple.com . x-apple-i-md-m