Schneier on National ID Cards, Key Escrow Locks, E-voting
Schneier's Cryptogram newsletter this month touches on a lot of subjects near and dear to our hearts: national ID cards, TSA-approved luggage locks, a cost-benefit analysis of stealing an election via hacking evoting machines, a nifty credit with audible security, etc.
You ought to be able to call your luggage on your cell phone and get its location. Wherify has announced a product for this, but isn't yet shipping.
Yes, the police are allowed to randomly ask you for your ID card. Most of the checks seem to be for immigration violations by mainlanders. On the other hand the HK government is putting in place fast immigration checkpoints, where you run your ID card through a scanner and provide your thumbprint and you're on your way without ever being questioned by immigration officials.
By law social security cards are NOT suppose to be used as an ID number. But its one of those laws the government looks the other way on. Many states use it for drivers license number, many schools use it for a student ID, and so on.