Reporting on this "research" is just giving these people the attention they want.
How many people in real life would go into that much trouble to unlock someone else's phone? If I'm a victim and held in captivity, I'd willingly unlock my phone for you so you can drain the $500 I have in my bank account.
You visit a foreign country. They want to perform industrial espionage by unlocking your phone and copying all your work e-mails.
And that's because you don't have a credit card either. The combined credit limits of a business traveler is easily $100,000.