[levpopov]

While the overall point of simple racks being better definitely stands, the premise that a bike needs two locks is just silly and impractical. Get wheel locks for your bikes - pinhead, hexlox (my favorite), etc. If your wheels are secured to the frame you just need to lock the frame with one lock/chain.

Takes way less time to park and you dont need to lug multiple 5lb locks (unfortunately thats how heavy secure locks actually are).

[aranchelk]

Pitlock are nice. The day I lost my Pinhead key and opened one with a flathead and a hammer in less than a minute was a little sobering. They’re still better than a quick release.

[levpopov]

For sure, nothing is 100% secure (and even with multiple U-locks an angle grinder will win out after a while). I've had a good experience with hexlox so far - they are super hard to remove without a key. Haven't had any theft issues in multiple years of parking around San Francisco.

[thrwyoilarticle]

With wheel locks + 2 D locks you can get around the problem of the bike being used as a lever to break a single D lock. It also means thieves are less likely to screw with your bike trying to take the wheels off.

[Rechtsstaat]

Well, I'd say that two locks are nice to have, if not entirely necessary. You can quickly use just the ring lock if you're hopping in and out of a store, and get out the larger one to lock your frame when you're storing your bike for a longer period.

[ciupicri]

Pinhead & Hexlox barely say how they work or offer any instructions and they're also quite expensive compared to cheap bikes.

[SamBam]

They're simply skewers that can't be removed by a standard wrench, but instead require a weird wrench with a semi-unique combination.

Could you still hack one? Sure, given time and forethought, but every other bike near you will have quick-release or regular hex nuts.

[codeulike]

In central london you need two locks, end of story