Yes then everyone knows you must have some serious amounts of #bitcoin.  If they introduce capital controls then you are stopped at the border either you give up the stash or spend some time behind bars. And if they size the lot do you have some backup somewhere else for when you come out jail?
Just travel with 24 words seed backup hidden among 200.000 words book and a Passphrase sculpted in your brain. Anyone somehow finding your 24 words cannot do anything without reading your brain. Its safer and more effective. You can then buy any Hardware wallet anywhere in the world to restore from seed if you do not want to travel with a blank one to give away your preferences for hard money. Keep it simple is always safer. 

 Your response is retarded and full of assumptions

•you assume the keys are in the devices-an empty cold card and phone prove nothing 
•there are many reasons to leave your home, including fire
•crossing borders is but one reason 
•you assume i would cross a boarder legally 
•you assume you can buy a hardware wallet somewhere else
•you assume the gear is recognizable
•you assume this is the only backup
•i do not memorize seeds or pass phrases as those can be coerced out of you

You just sound reactionary if not jealous lol