(Thanks for the tip, you know who you are.)
German safe technician and sport-picker extraordinaire Oliver Diedrichsen appears to be the first person to successfully attack the much-talked about “Forever Lock.”
For those who don’t remember, the Forever Lock used a “lafayette” to mechanically insert the key into the keyhole, while ensuring the user (and potential lock picker) never had direct access to the keyhole. Therefore, inserting lock picks is impossible.
What Diedrichsen figured out is that the Forever Lock has enough play in the key-conveying mechanism that it’s possible to bump the thing. By striking the handle used to manipulate the key once it’s been “swallowed” by the lock, you can cause the bumping action to occur.
Add in a suitably made bump key, and you’re in business.
Of course, if someone replaced the cylinder with my earlier suggestion (an Abloy-style disc lock) you’re still SOL. Impressioning might work?
Bonus video… a Parautopic lock! These are tremendously rare and equally historic . https://www.youtube.com/watch?v=rkygk24t3sU