> This is not a software issue (not directly).

What's really stupid is not being allowed to get on the flight at all.

Like: she's not labelled as a "terrorist", so just let her on the flight as she's not likely to make the plane explode, and let the customs folks take her as a one-off to be dealt with on home soil. Why is it necessary to be pre-approved to even get on the flight?

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KayEss an hour ago | parent [-]

Generally if you get turned away at the destination then the airline is liable for taking you away, so they won't let you fly unless they're sure that you will be accepted at the destination country.

	▲	blitzar 31 minutes ago \| parent [-]
		Under UK legislation as the owners, agents or operators of a ship or aircraft you may become liable for a charge of £2,000 for every passenger arriving in the UK without: - a valid “immigration document” which satisfactorily establishes identity and nationality or citizenship. - and, if the person requires a visa, a visa of the required kind or other permission to travel. This visa, or permission, may now be in either physical form, or a digital e- Visa; or - a valid Electronic Travel Authorisation (ETA), if the person requires one. https://www.gov.uk/government/publications/document-checks-a...