[sirmarksalot]

Living in a city, the idea of leaving anything of value on your bike, and expecting it to still be there when you get back is completely foreign to me. When I visited Amsterdam, I even had the seat stolen off my rental bike. Biking in the states means carrying a helmet inside with you everywhere you go, and it absolutely sucks.

[brewdad]

When I visited Copenhagen a few years ago, most of the bikes I saw were either unlocked or locked to themselves to prevent riding off but not carrying away. It was rather shocking.

[bluGill]

You see that on any area where there is low crime.

[sudosysgen]

Hmm, no. Bike theft is extremely common in Japan, for example. There are very few places in the world where you can do that, no matter the crime leve.

[Phrodo_00]

uh, I normally lock my helmet by putting my u-lock through the double section of the strap. Sure someone could cut the strap but then the helmet would be useless. I haven't had any issues and live in a city with pretty high bicycle theft.

[Kalium]

There are helmets you can lock with your bike.

[sleepybrett]

Some helmets from bern have special holes that are compatible with u-locks and similar. (https://www.bernhelmets.com/collections/bike-helmets/product... u-lock vents) I haven't done an exhaustive search but I imagine others do similar.

[sirmarksalot]

My friend has one. It's the only one I've ever seen.