And no need of x-rays, body searches, waiting in lines before security and passport controls, taxi drivers, cosmetics thrown to garbage, etc. Take with you about whatever you want and as much as you want.
Just make a normal working WiFi in trains. Still in 19th century there was a direct train from Saint Petersburg to Nice via Vienna. Nowadays despite a lot of talking about European Union Association for such countries as Ukraine, it is not possible to go by train from Vienna to Kiev directly. The same as during the Cold War, nothing changed.