14
votes
0answers
204 views

What chemicals does airport security use as markers?

I recently travelled to the USA from Asia. When I arrived in Detroit they marked my E-cigarette with a clear colorless liquid using a small paint brush used for water colors. What chemical(s) do they ...
17
votes
2answers
4k views

Is the TSA Lock acceptable in European Airports?

I understand if you travelling in or to the US, you can lock your luggage using the TSA Luggage Lock. (Immigration is still able to open your luggage using their own special keys) How about Europe? ...