[somerandomqaguy]

Probably not worth worrying strictly about the info gathered by airport security unless you're a person of interest, either to that nation or it's allies. If you're that interesting to whoever, all bets are off. Plenty of other ways to get info off phone.

FWIW I really don't recommend just fingerprint for phone access. You can change a PIN if someone else gets a hold of it, there's not much you can do to change your fingerprints.

[odyssey7]

Though the traveler may not be particularly interesting, their employer’s trade secrets or database access might be up there.

[somerandomqaguy]

Perhaps. I would hope that anyone accessing confidential information on a phone with such flimsy security would understand the risks they're taking.

If not then I'd question what their IT department was doing not forcing a least PIN unlock on the phone.

[odyssey7]

So it is a legitimate concern after all?