I wasn't talking about driver's license. I was talking about passport, visa papers etc. It's ridiculous to ask a foreigner, living or working in the country, to carry around such important documents all the time. BTW the "visa" isn't a convenient piece of card. It's literally letter sized papers, many pieces of them. These documents belong to the safe, not your wallet. How would you feel if you are required to have your car title deed with you ALL the time while you are driving the car? In my previous job, I interact with different law enforcement agencies and study the way they do their jobs. While some stay on the job because they understand its true value, most are there because of the pay check, or because they get to kick asses legally. Put it this way, 99% of the time, they have a reeeaaallllyyy boring job. Sometimes, if excitement doesn't come to them, they create some for themselves.