I just crossed (flight) two borders with my seedphrase in my pocket. Nothing happened.

I've been paranoid for months that I had to fly with my seedphrase and tried to think the most ridiculous and creative ways to hide it, until reason kicked in.

I wrote in 2 small (very small) pieces of paper my 24 words (12 on each and my passphrase in my head). Ive wrapped each of those small papers with another paper with random words written on them (to confuse a potential x ray).

One paper in the small jean pocket (you know that micro pocket in the right big picket), and another paper inside my left sock.

3 airports, 2 borders/migrations/luggage scanning. Yet my body was never scanned, just through those metal detectors that didn't sound when I went through with the mini papers.

Seed arrived safe home, restored my seed in my new hardware wallet (previous one was broken).

Conclusion, I'm very paranoid, but this time common sense won. Nobody was looking for seeds at the airport, and nobody gave a shit if I had a piece of paper with some words written on them. As it should be.