This law article is utterly hilarious and self-contradictory. No-one should be able to circumvent "a technological measure that effectively controls access", by definition. If someone does circumvent a measure intended to control access, this proves that the measure was not, in fact, effective, thereby rendering the entire article inconsequential.

The lock at your door is also assumed to effectively control who can open it, but as we know keys can be dupplicated. However, it is not possible to copy it without access to your original key and the necessary effort. This is sufficient for the legislator. It would be different if you hung your key on the outside of the door a priori, like Youtube does.

It's possible to duplicate your key from the lock.

You need access to the key hole, a blank, and a file. The lock leaves scratches on the blank until it's been file down to the right spot

Ok, obvously I have too little experience in picking locks; or maybe you have different locks than we in Switzerland.

GP was speaking metaphorically, following your (GGP's) metaphor. For some reason, you abandoned the metaphoric level and misunderstood this to be about real keys and locks.

For many and most physical keyed locks, you can decode the lock with special picks or impressioning tools. It can be pretty time and skill intensive though.