Obligatory XKCD: https://xkcd.com/538/ https://xkcd.com/538/ How ruthless is the foreign government? Make sure the person carrying the phone doesn't have the e

Obligatory XKCD: https://xkcd.com/538/ https://xkcd.com/538/ How ruthless is the foreign government? Make sure the person carrying the phone doesn't have the encryption keys.