98AB49DC5A wrote:actually it wouldn't resist bumping for long. the impact of the bump key on the pins would demagnetize the pins fairly quickly.
Master Lock looked into magnetic pins as an approach to defeat bumping but they said the driver pin still separated from the bottom pin on the way down as it set on the shear line. Of course they were using the magnets to hold the top and driver pin together to prevent a wide gap from forming during the bump. Mind you if that was the goal, simply going to wafer locks or a pin that protruded out both top and bottom hence gauged the key and was sprung with side fingers would've done the trick.
The Master Lock document that mentioned the magnets was titled "New Anti-Bump Technology from Master Lock by Billy Edwards, CML". The document also stated that the high speed video footage showed that it wasn't the inertia transfer via the Newton's Cradle effect that was at work but the top driver pins setting at the shear on the way down which was why their telescoping pins and magnetic pin attempts failed prompting them to focus on the shape of the bottom of the driver pins.
