Thoughts on bike locks

[robbat2]

Having my bike stolen has made me wonder about locks more. Defeating most forms of bike locks are trivially easy with some lateral thinking.

This was my lock:

Lock properties and attacks against

key-based

bumpkey (given a suitable blank or other key of same style), pick the lock, drill or freeze the lock (either LN₂ or just adding in warm water on a day that's below freezing)

combination-based

guess or shoulder-surf the combination

Cable/Chain

Large bolt cutters, wire cutters or hacksaw

U-Lock/D-Lock

Use a jack inside the arms to apply outward force

Any other bicycle lock types or different attacks that you can think of? Any way to effectively defeat one of more of the above attacks? From a security perspective, we need to consider not only the permitted attacks, but all possible attacks.

In my case, they either defeated my combination (probably by shoulder-surfing), or just used some form of cutting attack. Since the lock wasn't left behind, I suspect the former more than the latter.

Comments

[cupcakecalamity.livejournal.com]

Any non-cable or chain. A u-lock is your best bet.
http://www.kryptonitelock.com/
These are ok.

But you should just never leave your bike alone in this city, even locked up. Any number of parts can be removed quickly, and most people won't stop to ask what they're doing, because they assume they bike is theirs anyway (I have done this).

The best thing you can do is to get two bikes, a nice one and a crap one that can be replaced for $50. Use your crap bike on days where you'll be unable to watch it for extended periods of time.


...or bring the expensive one and cover it in lye WAHAHAHAAAAAAAAAA

[robbat2.livejournal.com]

The post was primarily about locking technology. See that I did include U-Lock, as well as how to defeat them easily (the lock itself or using a jack on the mechanism).

It's not that I buy expensive bikes, my bike was only $50, it's the principle of the matter (and the fact I very seldom go downtown).

[cupcakecalamity.livejournal.com]

Mm I know, but I still think u-lock is best bet. Average petty criminal won't be able to bump the lock. As for a safe place to lock-er-up downtown, try it in front of a storefront. People who work there will know the dood taking your bike isn't the dood who locked it. Not everyone will notice, but I do.

or you could just get some lyeeeee