There's a maxim running 'round the Internet about bikes and locks: All bicycles weigh 50 pounds. A 30-pound bicycle needs a 20-pound lock. A 40-pound bicycle needs a 10-pound lock. A 50-pound ...

The locks were designed by Koowho, a speciality bikeshop in Japan trying to deter instances of drunk biking. Which, yes, is a crime both here and in Japan. The one-pound lock is currently ...